Swedish engineers have developed a system that turns sweat into potable water. The Sweat Machine spins clothes to extract liquid from the fibres, filters it and transforms it into water. Their developers say the water extracted from the machine is cleaner than ordinary tap water.

Scientists at University of St Andrews in Scotland and the Institute of Scientific Instruments (ISI) in the Czech Republic have designed a minute but completely functional tractor beam.

Reminiscent of Star Trek, they use a beam of light to draw objects towards the light source on a microscopic level.

Co-owned by Google, NRG Energy and BrightSource Energy, the giant Ivanpah Solar Electric Generating System in California's Mojave desert will produce 392 MW of solar power at full capacity - enough electricity to provide 140,000 Californian homes with clean energy. The plant contains 300,000 large computer-controlled mirrors that help focus sunlight to the top of three 140m-high towers, where water is turned into steam to power turbines.

To view how it appears in Google Maps, follow the link. ...

This week in Science, researchers led by genome sequencing pioneer Craig Venter report engineering a bacterium to have the smallest genome - and the fewest genes - of any freely living organism. Known as Syn 3.0, the new organism has a genome whittled down to the bare essentials needed to survive and reproduce, just 473 genes. However, the function of 149 of Syn 3.0's 473 genes remain unknown.

As Syn 3.0's name suggests, it’s not the first synthetic life made by Venter. In 2010, Venter's team reported that they had synthesized the sole chromosome of Mycoplasma mycoides - a bacterium with a relatively small genome - and transplanted it into a separate mycoplasma called M. capricolum, from which they had previously extracted the DNA. After s ...

Finally, the world is paying attention to the dangers of consuming trans-fatty acids in food.

The World Health Organization (WHO) has called all nations to rid foods of artificial trans-fats in the next five years. Artificial trans-fat is made by converting healthy unsaturated oils (those that are fluid at room temperature) into ones that are chemically more stable through a process known as hydrogenation (illustrated below). The food industry began using this deceptive technique in the 1950s to increase the shelf-life of perishable grocery items such as pastries, and fried foods sold at restaurants.


Numerous studies have linked these fats to an increase in cholesterol levels, which can lead to cardiovascular diseases. One of the reasons for ...

A new vaccine has successfully killed the simian immunodeficiency virus (SIV) that causes AIDS in monkeys. It's hoped that with further research, an HIV-form of the vaccine can soon be tested in humans.

Lions are now critically endangered in West Africa. Although they once ranged continuously from Senegal to Nigeria, new research has revealed only around 250 adult lions survive in the region, and only one of the four isolated populations contains more than 50 individuals.