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.

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.

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.

I believe in just enriching the economy. And we're leaving so much on the table, 72 percent of the planet.

My final question: Why are we not looking at moving out onto the sea? Why do we have programs to build a habitation on Mars and we have programs to look at colonizing the Moon but we do not have a program looking at how we colonize our own planet, and the technology is at hand!

Great is the person who plants a tree knowing he will never sit under it.