Biological Information, a Mile and a Half Beneath the Ocean Floor

Scientists sent a drill to the lowest depths under the sea ever reached, and found a surprise: living organisms. How did they get there? The BBC relays the questions the scientists are asking:

"Were these microbes just in a swamp, and loving life in a swamp, because there is all sorts of carbon available, oxygen, organic matter... and then that gets buried?" pondered Dr Trembath-Reichert.

"It could be that they didn't get a chance to escape -- they couldn't exactly walk out. So is it that they...