A Danish/Swedish/French research team has shown that the oxygen content on Earth, 2.1 billion years ago, was probably same as it was during the so-called Cambrian explosion, 500 million years ago.
A new study has suggested that the explosion of animal life on Earth around 520 million years ago took place because of a combination of interlinked factors rather than a single underlying cause.
Scientists have, for the first time, measured the rates of evolution during the "Cambrian explosion" when most modern animal groups appeared between 540 and 520 million years ago..
A study suggesting that life may have first emerged on land about 100 million years earlier than previously thought, has sparks anger among scientists.
Day in Pics: 1st September
Showbiz World - September 1, 2014
Famous Ganesh Pandals in Mumbai