A U.K. startup wants to be the SpaceX of the deep sea, and hopes to establish a permanent human residence on the ocean floor ...

How did it end up underwater, and what else is hiding below? Live updates ... Has Done a Lot of Difficult and Significant Things': Elon Musk Says These Current and Former CEOs Are the 'Smartest ...

We also take a look at one startup's plan to have people living underwater by 2027. And we'll find out what elusive mountain cat was spotted by a photographer in Pakistan, before revealing the ...