How do scientists study and classify life-forms? How can we understand the complex evolutionary connections between living organisms? Woese's breakthrough was momentous for at least three reasons.

Scientists recently identified peculiar micro-burrows in marble and limestone formations in Namibia, Oman, and Saudi Arabia, ...

A team of international researchers has challenged the long-held belief that complex life forms first emerged on Earth 635 million years ago, presenting findings that show life may have existed ...