Science & Nature

Scientists propose that large elephants may not be running, regardless of how fast they appear to be moving. A series of investigations has made experts consider the possibility that the mammals may actually be walking very fast, rather than running in the strictest sense of the word.

An Atlas 5 rocket boosted NASA's Solar Dynamics Observatory into orbit Thursday, kicking off an $850 million mission to study the physics of the sun and the titanic magnetic storms, flares, and explosions that drive space weather across the solar system.

The US space agency (Nasa) will attempt to launch its latest Sun probe on Wednesday from Cape Canaveral, Florida.

Washington - The United States, China and dozens of other countries accounting for nearly 80% of the world's greenhouse gas emissions have signed onto a voluntary agreement to curb climate change.