Scientists Potentially Find Oldest Signs of Life on Earth

Scientists have just dug up a major clue to help answer the question of the Earth's age — and how long life has existed on its surface

A team working in Australia found sedimentary rocks containing a bacterial ecosystem that seems to date back nearly 3.5 billion years. They described the bacteria as "possibly the oldest signs of life on Earth," according to the UK's Daily Telegraph. Previous bacterial ecosystems dated back 3.4 billion years

The Pilbara region of Australia where the scientist found the rocks already boasts a reputation for containing some of the oldest rocks on the planet. The discovery not only gives more clues for life on Earth, but it might also help scientist investigate life on other planets. Read more...