BBC Sky at Night Magazine on MSN

What would proof of alien life look like? Here's what scientists are really looking for

The scientific community tends to employ ‘confidence of life’ detection scales: a multi-step ‘ladder’ that begins with ...
Daily Express US on MSN

'Alien' material found inside crater on Earth 'rewrites human history'

An asteroid impact millions of years ago may have provided a natural incubator for early life on Earth, scientists say.