Traces in rock may be the oldest evidence of life on Earth ever

Are we closing in on life’s cradle? What is claimed to be the oldest evidence of life on Earth yet found backs the idea that the first microbes originated around hydrothermal vents on the seafloor – but the work is already proving controversial. Explaining the origin of life is one of the biggest unclaimed prizes in biology, and one that many scientists – including Nobel prizewinners – are chasing.

World’s oldest fossils unearthed

Remains of microorganisms at least 3,770 million years old have been discovered by an international team led by UCL scientists, providing direct evidence of one of the oldest life forms on Earth. Tiny filaments and tubes formed by bacteria that lived on iron were found encased in quartz layers in the Nuvvuagittuq Supracrustal Belt , Quebec, Canada.

NASA’s far-flung space robots keep findings signs of water

Robotic explorers have found signs of long-lost water on Mars and extensive ice still present on the dwarf planet Ceres – evidence that water truly is almost everywhere we look. The results were announced last week at the fall meeting of the American Geophysical Union – the world’s largest gathering of Earth and space scientists.