Old (top) and new versions of cookers solar cookers have been around for over 200 years now. Their use is limited because of shortcomings related to

during landing and taking-off, a pilot usually has to manage the controls, while simultaneously keeping an eye on the runway. It would make things much easier for a pilot if she/he could do both the

Trees are not very effective as carbon sinks trees may not be the insurance against global warming we all thought they were. Their ability to store carbon dioxide has diminished due to rise in

december 14, Bali, Indonesia: a much anticipated un meet concludes. The meet was expected to work out a consensus to deal with climate change once the Kyoto Protocol expires. It did come

at a time when the un was trying to work towards a post-Kyoto agreement, us President George w Bush held a meeting of 17 top emitters of greenhouse gases for a dialogue on energy and climate change.

In 1937, Ivan Papanin led an expedition that planted the Soviet flag on the North Pole. He was feted by Stalin and lionised as a Soviet hero. In early August this year, the Kremlin honoured Artur