I think the most important thing people can do to save our planet and the human race is to empower women!

It is a quiet and peaceful place - and a fitting place for the remains of this greatest of sea tragedies to rest.

It's not a huge surprise that there are habitations at the bottom of the Black Sea.

Well, when I was a kid, I grew up in San Diego next to the ocean. The ocean was my friend - my best friend.

The fact that this chain of life existed [at volcanic vents on the seafloor] in the black cold of the deep sea and was utterly independent of sunlight - previously thought to be the font of all Earth's life - has startling ramifications. If life could flourish there, nurtured by a complex chemical process based on geothermal heat, then life could exist under similar conditions on planets far removed from the nurturing light of our parent star, the Sun.

Almost a quarter of our planet is a single mountain range and we didn't enter it until after Neil Armstrong and Buzz Aldrin went to the moon. So we went to the moon, played golf up there, before we went to the largest feature on our own planet.

Remember to always dream. More importantly, work hard to make those dreams come true and never give up.