Did the first dinosaurs wander across continents or stay put where they first evolved? The first dinosaurs evolved 230 million years ago when the continents were assembled into one landmass called Pangea.

Chinese and Indian firms are increasingly snapping up mining assets as the credit crisis sidelines Western rivals, according to a leading sector investment banker.

NASA’s Mars exploration rover Opportunity is allowing scientists to get a glimpse deep inside Mars.Perched on a rippled Martian plain, a dark rock not much bigger than a basketball was the target of interest for Opportunity during the past two months.

The hole in the ozone layer is now steadily closing, but its repair could actually increase warming in the southern hemisphere, according to scientists at the University of Leeds.