The main reason we are able to float is that the density of our bodies is relatively less than the density of water. A large part of the human body is made up of air and water. Buoyancy-the ability to float depends on the individual. But with experience it is possible to improve your body balance, in other words to …

It is the use of non-human animal cells, tissues and organs in human patients. These cells can be implanted or enclosed in a device used outside the body. The tissue is harvested from animals already being butchered. Immune rejection remains the biggest challenge for this. A worrisome element of xenotransplant is the potential for infectious disease from donor animals which …

A virus is smaller than the smallest bacteria visible through an ordinary microscope. Viruses can multiply only within the living cells of humans, animals or plants. They are responsible for a wide range of infectious diseases and illnesses. Viruses can be investigated with the help of the electron microscope, and their measurements recorded. The virus responsible for foot and mouth …

The Venus Project is an organization that promotes and advocates American futurist Jacque Fresco’s visions of the future with the aim to improve society by moving towards a global sustainable social design that they call a “resource-based economy”. Such a system incorporates sustainable cities and values, energy efficiency, collective farms, natural resource management and advanced automation, focusing on the benefits …

Allethrins are compounds used in household insecticides like mosquito coils because they have low toxicity for humans. They are sourced from chrysanthemum flowers, found in Asia and eastern Europe. These plants are cultivated for ornamental, culinary or insecticide-preparation purposes. The flowers are pulverized and the allethrin compounds found in the seed cells are extracted and sold to insecticide makers.

We all use computers. If you use Windows on your machine, like me, you will have a small button at the the bottom of your screen called ‘Start’. Every machine in the world which has the Windows software installed has to have that button. However, we can have different screen colours, different text sizes, wallpapers etc. Similarly our bodies are …

The Scopes Trial brought about a prosecution in 1925 in Dayton, Tennessee. The prosecution was of a high school biology teacher who taught the theory of evolution. The teacher, John T Scopes, was accused of having violated the Butler Act, a Tennessee law that forbade the teaching of the theory of evolution in public schools because it contradicted the account …

These are robots that look like Volkswagen Beetle cars, only they have legs instead of wheels. They can scuttle across spaces and have the potential to help put out forest fires. They can be used in areas which can be quite dangerous for humans. These robotic Beetles were developed by the University of Magdeburg-Stendal in Germany.

The most ambitious project since the Apollo missions to land a man on the moon, the International Space Station (ISS) is the next step in human exploration of the solar system. It is a joint venture between 16 nations, and the largest scientific cooperative programme in history. All power for the space station is generated by large arrays of solar …

The Great Rift Valley is the vast geographic depression that runs from the Jordan River Valley in Syria, South-western Asia to Mozambique in eastern Africa. The valley is approximately 6000 km, and its width varies from a few miles to more than one hundred miles. Its elevation varies from 1300 feet below sea level to 6000 feet above sea level. …