An international team of researchers say they’ve found fossils dating back to at least 3.77 billion years ago, making them the oldest fossils ever found on our planet. The discovery, though sure to attract scrutiny, has implications for our understanding of how life got started on Earth—and how it may have emerged…
It's generally agreed that life on this planet would not be possible if it weren't for microbes. In a fascinating thought experiment, a pair of biologists scrutinized this assumption to find out. As their paper makes clear, a microbe-free world would be a strange place, indeed.
The world of the incredibly small is also the world of the incredibly cool. Check out the winners of this year's Small World Photomicrography Competition.