Mariana Trench: Deepest ocean 'teems with microbes ... in the last six months dives have also taken place in the Puerto Rico Trench in the Atlantic Ocean (8,376m/27,480ft down), the South Sandwich ...

The dive shattered the previous depth record for the Atlantic ... t even know for certain that Challenger Deep really is the bottom-most spot on the ocean floor. Next up on Vescovo's journey ...

Almost five years of studying the deep Atlantic in unprecedented ... The project involved researchers from 13 countries around the Atlantic - combining ocean chemistry and physics, as well as ...

This is only the second manned expedition to the ocean's deepest depths - the first took place in 1960. The earlier descent was made by US Navy Lt Don Walsh and Swiss oceanographer Jacques Piccard.

Scientists have pinpointed the ocean engine ... key Atlantic currents before the last ice age, study finds "Freshwater release in this region not only directly inhibits deep-water formation ...