computer virus in space

San Francisco - Scientists from the National Aeronautics and Space Administration (NASA) were busy Wednesday fighting a computer virus that managed to infect one of the laptop computers used by astronauts on the space station, a spokesman for the US space agency said.

Citing security concerns, NASA declined to identify the virus, or how it made its way to the space station.

But the space news site SpaceRef.com, which first reported the infection, identified the virus as 'W32.Gammima.AG'. Referring to NASA's daily status reports, the site said the virus was probably transmitted on a flash disk drive which somehow had not been scanned.

The malware is a year-old Windows worm designed to steal information from players of 10 different online games, some of them specific to the Chinese market. Among the games are ZhengTu, HuangYi Online and Rohan.

NASA said that new antivirus programs had been installed on the station's computers and that the worm posed no threat. 'It was never a threat to any command-and-control or operations computer,' NASA spokesman Kelly Humphries told Computerworld magazine.

Watermelon in interesting shapes

Japanese watermelons are no longer round! They are funny looking shaped like human-faced , hearts, cubic & pyramids.

Watermelons in interesting shapes all started with a cubic watermelon that a farmer in the Kagawa prefecture grew about 20 years ago. Originally, this was created on the idea that a watermelon in the shape of a cube would fit more readily in a compact refrigerator.

Its unique shape brings it a lot of attention from all over the world. Today, these watermelons from Japan have become known all around the world."

There are actually several darned good reasons for making a watermelon in a square shape. Since these things make great gifts, it makes sense to package them in boxes and a square shape fits into a square box with the minimum amount of wasted space. In addition, the shape naturally lends itself to being bedecked in a decorative ribbon, birthday-present style.

Farmers in Zentsuji, located in southern Japan, place the small on-the-vine watermelons in tempered glass forms that force the growing melons to conform to their shape while still receiving necessary sunlight. Only about 400 of the four-sided fruits are grown each season. .

The Square Watermelon can be found in Japanese grocery stores in Tokyo and Osaka and is not currently available in the USA. Square watermelons grown in Brazil have lately become available in Great Britain, though, so we may be enjoying them here yet! Prices in Japan are in the $80 - $85 range (about 10,000 yen) when in season.

A Vietnamese student, Dinh Tran Nguyen, a senior student of agriculture and applied biotechnology from southern Can Tho University has also successfully grown square-shaped watermelon, adding to the success of scientists in developed countries like Japan, Italy and the United Kingdom.

The grower plans to try shaping "gourds and bottles" out of watermelon next year. Can I put in a request for a aeroplane-shaped watermelon.........?

World Water Week, (17-23Aug,2008)

Every 20 seconds, a mother mourns a dead child lost to diarrhoea – a completely preventable and utterly inexcusable cause of death. Investing in improved sanitation and hygiene not only saves lives and restores dignity – it helps eradicate poverty and hunger, promotes universal primary education, builds gender equality, improves maternal health and ensures environmental sustainability. Rivers, lakes, groundwater and coastal areas polluted form untreated waste result in unsafe drinking water and damaged ecosystems. But the problems can be solved. The 2008 World Water Week in Stockhome,Sweden will place special focus on sanitation, including special attention on water Sanitation.
Water and Sanitation in Asia
With two-thirds of the world’s population and half of them – close to two billion people – living without sustainable access to safe water and improved sanitation, the scale of sanitation and water issues in Asia is mind numbing. Events during the week, including Asia Water Day on Tuesday, Aug19 will focus on the region’s colossal water challenges and discuss the solutions that will shape the future of the world’s largest continent.
Transboundary Waters
Water security is the fundamental entry point for a nation’s development. More often than not, countries share the water bodies upon which they depend and must negotiate how benefits are divided amoung riparian nations. Generating and sharing benefits requires more than good will and political cooperation – huge investments involving considerable risk and social and environmental costs are often needed. A number of events will explore key areas of regional transboundary water management.
Climate and Water
Changes in water availability are what hit us first with an altered climate. Among the effects: too much or too little water; water at the wrong time or in the wrong place; rising sea levels; and floods in certain regions but drought in others. Adaptation is paramount and a matter of sheer survival for billions of people. The World Water Week has on an ongoing basis addressed the multiple relations between climate change and water. It will do so even more this August with world-leading experts taking part in a full slate of sessions.

Triumph over nature

It is yet another attempt by man to triumph over nature.
Determined not to let anything spoil their party, organizers of the 2008 Summer Olympics proved that they will take control over the most unpredictable element of all -- the weather.
While China's Olympic athletes were getting ready to compete on the fields, its meteorologists were working the skies, attempting the difficult feat of making sure it doesn't rain on the Aug. 8 opening ceremonies and finally they could do the miracle. The glittering inaugural function had everything but rains!!!!!
The Chinese are among the world's leaders in what is called "weather modification," but they have more experience creating rain than preventing it. In fact, the techniques are virtually the same.
Cloud-seeding is a relatively well-known practice that involves shooting various substances into clouds, such as silver iodide, salts and dry ice, that bring on the formation of larger raindrops, triggering a downpour. But Chinese scientists believe they have perfected a technique that reduces the size of the raindrops, delaying the rain until the clouds move on.
The weather modification were used only on a small area, opening what would be in effect a meteorological umbrella over the 91,000-seat Olympic stadium. The $400-million stadium, nicknamed the "bird's nest" for its interlacing steel beams, has no roof.
Training with the Olympics in mind, the meteorologists have been practicing their "rain mitigation" techniques since 2006. They have had a couple of dry runs, so to speak -- a China-Africa summit and a panda festival in Sichuan province, among others.
The Chinese have been tinkering with the weather since the late 1950s, trying to bring rains to the desert terrain of the northern provinces.
The Chinese bureau of weather modification is believed to be the largest in the world. It has a reserve army of 37,000 people -- most of them sort of weekend warriors who are called to duty during unusual droughts. The bureau has 30 aircraft, 4,000 rocket launchers and 7,000 antiaircraft guns.
At present, Beijing has technology for artificially influencing weather conditions. It can control/eliminate small-scale rainfall using artificial rain elimination technology. There are several ways to influence weather conditions artificially, one of which is to adjust rainfall mechanisms by adding a catalyst to the clouds to stop rain. Another is to make the clouds rain in advance. As for the question of whether the catalyst added to the clouds will do harm to the environment,the chinese authorities said that what is added to the clouds is either liquid nitrogen or silver iodide. "Liquid nitrogen does not pollute the environment at all and we use just 1 gram of silver iodide per square km,"
" Chinese have the largest program in the world but it is not really the most advanced. That honor belongs to the Russians, who used sophisticated cloud-seeding in 1986 to prevent radioactive rain from the Chernobyl reactor accident from reaching Moscow

........ and he invented it!

Every farmer knows and you may not know that female plants bear fruits in Nutmeg plants(Nutmeg-an aromatic cash crop find in tropical climate is dioecious variety). Normally it takes up to 5 years to get yield. Just imagine the shock of a nutmeg farmer when he realises that the plant he has been watering , pampering is a useless male plant !then he has to go for budding and then a waiting of 2 more years!Then you may ask me why cant you go for a female plant ?But how will you make out a female plant ? "nothing is apparent " in a plant helping to identifying the gender of a nutmeg plant. Universities suggests DNA analysis(to be more specific I have to tell you polymerised chain reaction based seedling sex diagnostic assay) and the process is out of reach of an ordinary farmer and is a bit complicated too.
Here comes our hero Moideen Naina!He is in nutmeg farming since his retirement from railway service. Patience is the only word you cannot find in his dictionary. So he was not able to think of imagining a waiting of 5 years to identifying the gender of the plant. So he started his search or as you call it his research to see whether any difference is there in male and female plants. Started by chopping plants leaves adding ,extracting,subtracting,......
No use ......years passed....age was in his side (he is in his mid seventies!) but one day he came running from his farm only to lift his wife (I was told , but both fell down ....t..h...u...d ) and dance ''eureka, eureka ''.
Though Naina is not prepared to reveal that which chemical formula made him dance,he is ready to help his fellow farmers. Just pluck two or three leaves of "The nutmeg plant in question ' and just drop the sap oozing out from the leaves, to 5 ml of colour less solution invented by Naina, shake well only to see a wonderful colour change. If it changes to dark amber certainly you can dance with joy. yes it will be a female plant and if its light amber you can very well bid good bye to the unfortunate (male) sapling!
Now you can very well separate male and female plants in your nursery and go for cent percent sure lucky nutmeg farming with out cracking your nut. Do you want to congratulate Mr Moideen naina? he is available at +91 0484 2446753

(Courtesy:Poor-me,manjaly-halwa)

Science For Everyone

Safe Foods

Safe Food Handling At Home

According to the Center for Disease Control, an estimated 76 million cases of foodborne illness occur each year with a corresponding 325,000 hospitalizations and 5,000 deaths resulting in a $3 billion per year health care cost. Most of these illnesses could have been prevented if safe food handling practices had been applied.

Safe Food Handling for Consumers

Foodborne illnesses are infections of the intestinal tract caused by a variety of bacterial and viral pathogens. The foods your family eats can become contaminated with these pathogens during any point in the food preparation process. You cannot tell if a food is contaminated by smelling, tasting or looking at it. Therefore, it is best to treat all foods as if they are contaminated and adopt safe food handling and preparation routines in your home.

An Invisible Enemy

Millions of bacteria are ready to invade food products, kitchen surfaces, knives and utensils in your home. But you have the power to "Fight Bac"! It's as easy as following these four simple steps:

CLEAN: Wash hands and surfaces often

According to food safety experts, bacteria can spread throughout the kitchen and get on to cutting boards, knives,sponges and counter tops. Here's how to Fight BAC:

Wash hands in hot soapy water before preparing food and after using the bathroom, changing diapers and handling pets. For best results, consumers
should use warm water to moisten their hands and then apply soap and rub their hands together for 20 seconds before rinsing thoroughly.
Wash cutting boards, knives, utensils and counter tops in hot soapy water after preparing each food item and before going on to the next one.
Use plastic or other non-porous cutting boards. Cutting boards should be run through the dishwasher - or washed in hot soapy water - after use.
Consider using paper towels to clean up kitchen surfaces. Or, if using cloth towels, wash them often in the hot cycle of the washing
machine.
SEPARATE: Don't cross-contaminate

Cross-contamination is how bacteria spreads from one food product to another. This is especially true for raw meat, poultry and seafood. Experts caution to keep these foods and their juices away from ready-to-eat foods. Here's how
consumers can Fight BAC!:


Separate raw meat, poultry and seafood from other food in the grocery shopping cart.
Store raw meat, poultry and seafood on the bottom shelf of the refrigerator so juices don?t drip onto other foods.
If possible, use one cutting board for raw meat products and another for salads and other foods which are ready to be eaten.
Always wash cutting boards, knives and other utensils with hot soapy water after they come in contact with raw meat, poultry and seafood.
Never place cooked food on a plate which previously held raw meat, poultry or seafood.
COOK: Cook to proper temperatures

Food safety experts agree that foods are properly cooked when they are heated for a long enough time and at a high enough temperature to kill the harmful bacteria that cause foodborne illness. The best way to Fight BAC is to:


Use a meat thermometer, which measures the internal temperature of cooked meat and poultry, to make sure that the meat is cooked all the way through.
Cook roasts and steaks to at least 145°F. Whole poultry should be cooked to 180°F for doneness.
Cook ground meat, where bacteria can spread during grinding, to at least 160°F.
Cook fish until it is opaque and flakes easily with a fork.
Make sure there are no cold spots in food (where bacteria can survive) when cooking in a microwave oven. For best results, cover food, stir and rotate for
even cooking. If there is no turntable, rotate the dish by hand once or twice during cooking.
Bring sauces, soups and gravy to a boil when reheating. Heat other leftovers thoroughly to 165°F.
CHILL: Refrigerate promptly

Food safety experts advise consumers to refrigerate foods quickly because cold temperatures keep most harmful bacteria from growing and multiplying. So, public health officials recommend setting the refrigerator at 40°F and the
freezer unit at 0°F and occasionally checking these temperatures with an appliance thermometer. Then, Fight BAC by following these steps:


Refrigerate or freeze perishables, prepared food and leftovers within two hours.

Never defrost (or marinate) food on the kitchen counter. Use the refrigerator, cold running water or the microwave.

Divide large amounts of leftovers into small, shallow containers for quick cooling in the refrigerator.

With poultry and other stuffed meats, remove the stuffing and refrigerate it in a separate container.

Don't pack the refrigerator. Cool air must circulate to keep food safe.

Nanosilver Bullet Kills HIV

The first of many technological miracles?

In a groundbreaking study, the Journal of Nanotechnology has published a study that found silver nanoparticles kills HIV-1 and is likely to kill virtually any other virus. The study, which was conducted by the University of Texas and Mexico University, is the first medical study to ever explore the benefits of silver nanoparticles, according to Physorg.

During the study, researchers used three different methods of limiting the size of the silver nanoparticles by using capping agents. The capping agents were foamy carbon, poly (PVP), and bovine serum albumin (BSA). The particles ranged in size from 1 to 10 nanometers depending on the method of capping. After incubating the HIV-1 virus at 37 C, the silver particles killed 100% of the virus within 3 hours for all three methods. The scientists believe that the silver particles bonded through glycoprotein knobs on the virus with spacing of about 22 nanometers in length.

While further research is needed, researchers are optimistic that nanological silver may be the silver bullet to kill viruses. The researchers in the study said that they had already begin experiments using silver nanoparticles to kill what is known as the super bug (Methicillin resistant staphylococcus aureus). Already used as a topical antibiotic in the medical industry, silver may now come under consideration as an alternative to drugs when it comes to fighting previously untreatable viruses such as the Tamiflu resistant avian flu.

In the first-ever study of metal nanoparticles' interaction with HIV-1, silver nanoparticles of sizes 1-10nm attached to HIV-1 and prevented the virus from bonding to host cells. The study, published in the Journal of Nanotechnology, was a joint project between the University of Texas, Austin and Mexico Univeristy, Nuevo Leon.

"Our article opens an important avenue for research," said Miguel Jose Yacaman, from University of Texas, Department of Engineering and one of the study's authors.

In this study, scientists mixed silver nanoparticles with three different capping agents: foamy carbon, poly (PVP), and bovine serum albumin (BSA)."Not using a capping agent could result in the synthesis of big crystals instead of nanocrystals," explained Yacaman.

Transmission electron microscopy (TEM) showed the silver nanoparticles in the foamy carbon matrix were joined together, but an ultrasonic bath in deionized water released a significant number of nanoparticles. These nanoparticles were of size 16.19 (+-8.69)nm and had the greatest variety of shapes, such as icosahedral, decahedral, and elongated.

"Because of the synthesis procedure, the foamy carbon-coated naoparticles are more likely to have broad shape distribution," said Yacaman. Scientists used the electron beam to release the remainder of the nanoparticles from the joined bundle.

For the PVP-coated silver nanoparticles, scientists used glycerine as a dissolving agent. These particles were of size 6.53 (+-2.41). In the third preparation, scientists used serum albumin, the most common protein in blood plasma. The sulfur, oxygen, and nitrogen chemicals in BSA stabilized the nanoparticles, which were in the range of 3.12 (+-2.00) nm.

Scientists studied the absorption spectra of the different preparations to pinpoint their shapes. "Spherical nanoparticles absorbed in the blue region of the spectrum, for example," Yacaman said.

Also, the UV-Visible spectra graphs helped the group determine nanoparticle sizes. "The surface plasmon resonance peak wavelength increased with size," explained Yacaman.

Scientists tested, in vitro, each of three silver nanoparticle-preparations in HIV-1 cells. Yacaman and his colleagues incubated the samples at 37 C. After three hours and 24 hours, respectively, 0% of the cells were living.

The results showed that a silver nanoparticle concentration greater than 25 ug/mL worked more effectively at inhibiting HIV-1 cells. Plus, the foamy carbon was a slightly-better capping agent because of its free surface area. Size also played a role since none of the attached nanoparticles were greater than 10nm.

Scientists think the nanoparticles bonded through the gp120 glycoprotein knobs on HIV-1, using the sulfur residues on the knobs. The spacing between the knobs of ~22nm matched the center-to-center nanoparticle spacing.

Although this study shows silver nanoparticles may treat HIV-1, scientists need to research this relationship further. "We lack information regarding the long-term effects of metal nanoparticles," cautioned Yacaman. Scientists are forming a preventive cream for HIV-1, which they will test on humans.

Scientists are also studying other uses for silver nanoparticles. "We're testing against other viruses and the 'super bug (Methicillin resistant staphylococcus aureus).' Our preliminary results indicate that silver nanoparticles can effectively attack other micro-organisms," Yacaman said.

Hydroponics

Hydroponics is often defined as "the cultivation of plants in water." Research has since determined that many different media will support plant growth; therefore, the definition of hydroponics has been broadened to read "the cultivation of plants without soil."

Growers all over the world are using hydroponic techniques due to the lack of a large water supply or fertile farmland. Home gardeners have used hydroponics on a smaller scale for growing vegetables year round and to grow plants in smaller spaces, such as an apartment or balcony. Greenhouses and nurseries grow their plants in a soilless, peat or bark-based growing mix. The nutrients then are applied to the growing mix through the water supply. Therefore, this is also a type of hydroponics.

Soilless gardening offers many advantages . Since a sterile medium is used, there are no weeds, soil-borne pests and diseases are minimized. Properly grown hydroponic plants are healthier and more vigorous because all of the necessary growth elements are readily available. The plants can mature faster, yielding an earlier harvest of vegetable and flower crops. Hydroponic gardens use less space since the roots do not have to spread out in search of food and water. The big advantage to hydroponics is the ability to automate the entire system with a timer. Automation reduces the actual time it takes to maintain plant growth requirements.

Hydroponics offers many advantages for commercial agriculture. Cultivating plants without soil eliminates the need for vast farmland and allows crops to be produced in greenhouses or even in the desert sands. Hydroponic techniques allow for precise water and nutrient application directly to the roots . Water is reused in these systems and less is lost through evaporation and run-off. Therefore, arid lands, such as deserts, can be transformed into productive lands using limited amounts of water.

Plant Requirements

All plants require nutrients, water, light, and air to grow. A plant grown in soil obtains nutrients and water from the soil, when available. With hydroponics, because water and nutrients are always available, the plant is never stressed. Sunlight and air are readily available in an outdoor hydroponic system. However, for an indoor system, one must provide an adequate light source and good air circulation. Metal halide lamps, sodium vapor lamps, grow lights, or fluorescent lights used in conjunction with incandescent light bulbs provide adequate light. Plant roots must have oxygen available to keep them alive. Healthy roots (which are white in color) are responsible for the uptake of all nutrients for the plant. If the roots die, it is impossible for the plant to survive, even if the plant growth requirements are met. Air circulation around leaves is important since it mixes the air and allows the plant to draw out the carbon dioxide necessary to carry on photosynthesis. Air circulation also helps prevent plant diseases caused by moist, stagnant conditions. Indoor units often have a small fan to circulate the surrounding air.

Nutrient Solution

Most fertilizers commonly available in garden centers do not contain all of the 13 elements necessary for plant growth . Hydroponic plants receive nutrients from a different source; so it is necessary to use a fertilizer formulated for hydroponic systems. Hydroponic nutrients are available from many mail order companies and a few specialty stores offering garden supplies. It is important to follow the dilution rate recommended on the label and to test the solution to be sure that the pH is between 5 and 6. Simple pH test kits and pH modifiers are available wherever fish supplies are sold.

Aquarium Plants

Aquarium Plants

There are many growing media available and used in plant propagation. Aquarium plants are a specialized crop and so need a medium that will suite the conditions of where the plant will end up which will be the aquarium. Rockwool or Cultiwool is most commonly used these days. Cultiwool is a type of fibre glass often used for heat or acoustic insulation in houses and factories.

Cultiwool is used for a number of reasons:

It is inhert and so will not pollute the aquarium or affect the pH or water quality when the plants are put in the water.
Cultiwool has excellent growing media properties like a high air fill porosity, it wets easily and has a high nutrient exchange capacity
Cultiwool is also a clean and easy medium to work with so helps with planting, cleaning and packaging and transport of plants.

Media for the Aquarium
When the person receives the plant from his pet store the rockwool should be carefully removed if possible. The plants roots can sometimes be trimmed before planting or in faster growing plants even be cut off to stop rotting in the tank because of damage.

Organic and Animal material and manures
I would stay clear of these as they can be unstable when they break down in the substrate.
Peat moss
This is also organic but can be useful to try and stabilize the pH of the water it can also help to stop compaction. I would not make more than about a quarter of the mix peat.
Mineral soils
These are made up of clays, silts and sands. These are the most useful. In particular the red clay soils as they generally have a high soil nutrient capacity and have a high iron content.
Commercial mixes
There are commercially made mixes for the aquarium made by some of the larger companies - often mentioned is commercial laterite which is basically a red clay.
The medium in the aquarium needs to serve as anchorage and as a source of nutrients for the plants. For the nutrients a red clay soil should be used mixed with 2mm to 8mm rounded gravel about half clay and half gravel, peat can be added to this as well preferably composted peat.

On top of this a layer place a layer of washed rounded gravel about 2cm to 8cm to stop the clay being disturbed in the water. It is important that the gravel is rounded (like river pebbles) so debris can easily slide through and be broken down in the gravel layer where the bacteria will be. Sharp gravel like silica sand does not allow this and you get a build up of debris on the surface of the gravel that does not break down easily. There are many other types of gravel offered like the synthetic coloured beads etc which I would stay away from for aesthetic reasons.

If you are going to have a sloping gravel bed it is better not to slope the clay layer as it can later level it self through the gravel and cause it to be disturbed. Also try and use rocks or bog wood to rather terrace the levels rather than make slope.

When filling the tank you need to be careful to not disturb the clay - the same goes for planting. it is sometimes easier to plant the plants before you fill the aquarium up.

Nano robots

Nano robots

Moving right along from the outer to the inner universe, the smallest robots of all, nanobots, will be exploring the human body, as well as other organisms, repairing and correcting, providing information on how we work on the inside.

Already this field of technology - nanotechnology - is expanding rapidly. Although there are no nanobots as yet, there have been advances in manufacturing nanoparts, such as engines. Nanotechnology is also used in various industrial and medical applications.

So for those of us who think that robots are still only science fiction, think again. We are already living in our future and robots are increasingly becoming a daily aspect of this current future.


The adjacent photo shows an example of how nanotechnology robots might interact with our bodies in the future, repairing and maintaining red blood cells.

nanomedicine

Nanomedicine is an application of nanotechnology in the field of medicine. Nanotechnology is mostly upcoming, which is why we think it will permit dramatic progress in human medical services.

At most times judging the simplest of problems is very difficult when we look at the situation on the whole. With Nanomedicine, we will be able to think of today's incurable diseases as curable tomorrow, by looking at a problem at its molecular and atomic levels.

Till now scientists have dissected animals and other creatures to attain more knowledge about the matter from which they are made of, and often succeeded in finding out more than they needed. This has indeed helped in curing so many diseases, proved so many theories wrong and has also seemed only good for the future of the human race.

We have learnt from our experiences of measuring Human Externalities as the only means of progress, there has been no noticeable change in the timescale of the human civilization. Even though we have progressed since that time, it is most difficult to judge how useful nanotechnology can be in the field of medicine and what the side-effects of such means of treatment may be.

This may be the reason (we assume) because of which Nanomedicine is not developing today as fast as other technologies. Our strategy of using Nanomedicine maybe completely wrong, but at the same time, it may be right to some extent. But continuing research will only help us in the long run, as it will certainly help us understand the functions of the 100,000 proteins that the human body is made of. What will help us with this procedure is our existing vast knowledge in various fields like Physics, Chemistry, Math and IT.

People have taken interest in nanotechnology, but feel that its applications with too much progress may be misused and may in turn, cause chaos. Nanotechnology in this case, is often misunderstood as miniaturisation, which is a completely different phenomenon, currently not in our discussion.

In the cosmetic industry, nano-sized particles are already in use. For e.g. Zinc Oxide particles which are helpful in sunscreens are used in lotions and moisturizers. We have been using objects made of such nano-particles, for quite a long time, without thinking about howsoever harmful they may be.

The future of Nanomedicine Top ¬

Nanorobots are machines comparable to the size of a nanometre (10-9 metres). Though still largely theoretical, Nanorobots which will vary in size between the range of 0.1 and 10 micrometres, they will be constructed from nanoscale components.

Most medicines today, tend to destroy good cells along with the bacteria and viruses. With nanorobots (or nano-machines) we will be able to identify pathogens in body fluids, and destroy them without destroying the human immune system. Building nanorobots may indeed be very expensive, but the end product may help cure diseases like HIV AIDS which can only be prevented today and not cured.

An important precaution we must take while building such a machine, is to restrict its artificial intelligence to level upto which we may be able to have full control over it and not let it control our body instead. Inhibitor chips may have to be built into them so that there can be no connection between the human nervous system and the nanorobots.

We can only think of the bright side of Nanotechnology as such, because looking at any other aspect may only ruin the little progress that this field has got till now.