Time of our life
Oxygen bubbled 100 million years earlier than thought
Oldest feast
Of ups and downs
Shifts in the Earth's rotational axis caused changes in sea level
Diamonds for dinosaurs
Breaking a myth
In search of the past
A Chilean field provides fresh evidence on America's first inhabitants
Striking it rich
Fossil find
Scientists find the oldest life form in Indian geological history
Tilting Earth
The big aftershock
Quake activates nearby faults, triggers more quakes