Scientists had determined that this ice sheet last retreated about three million years ago. But a new paper in the journal Nature suggests—based on a study of crystals collected from the region—that a large part of it collapsed only 400,000 years ago. How long ago did Antarctica freeze over? ByRead More →
Fortnight. A period of 15 days or two weeks is called as Fortnight. What is a British fortnight? A fortnight is fourteen nights, or two weeks. … The word fortnight is still in use in Great Britain and some former British colonies. It comes from the Old English, and isRead More →
The moment this sexual dimorphism manifested in the evolution of the giraffe, it would have been the males that could have reached the higher branches. The females and young animals would have died and the species would have gone extinct (Pincher 1949). Did giraffes evolve from short necks? According toRead More →