Climate change is the Everest of all problems, the thorniest challenge facing humankind.

When I'm preparing for a swim, I imagine absolutely everything about it: the color of the water, how cold it is, the taste of salt in my mouth. I visualize each and every stroke.

Climate change is the Everest of all problems, the thorniest challenge facing humankind.

I learned two basic lessons on Everest. First, just because something has worked in the past does not mean it will work today. Second, different challenges require different mindsets.

There is nothing more powerful than the made-up mind.

If you want to swim across the English Channel from England to France - you have to leave your doubt on the beach in England.

The right to have our environment protected for the benefit of present and future generations is our most important human right.