Green Groups are turning to social networking to drive their campaign for Earth Hour.
Researchers from the universities of Florida and Nebraska used fossils to follow the evolution of horses from their earliest appearance 56 million years ago.
A prominent climate change skeptic told Congress that he no longer doubts that global warming is real and caused by humans, and joined other scientists in urging action to stop it.
As a result of human activities such as the burning of fossil fuels for energy and land-use changes such deforestation, the concentration of carbon dioxide in the atmosphere is now higher that it has been at any time over the last 800,000 years .
Plants form an important role of the worldwide carbon cycle in which carbon is continuously recycled and reused by plants and animals, the oceans and land.
A multinational team of planet hunters tracked down the orb and established that the newly discovered planet was not only the densest planet ever discovered but also that it was made of carbon and crystallized oxygen.
General practitioner diagnoses of allergic rhinitis in the UK, which includes hay fever that has risen by 30 percent between 2001 and 2005.
The international energy agency estimates that the percentage of wind energy, solar energy and energy from water resources will rise 22 percent by 2030, but at the same time the demand for energy is set to grow 76 percent.
There are between 441 million to 663 million trees were killed by storm that swept the region in January 2005, based on a satellite data, on site observation and computer models calculation at Tulane University by researchers.