It took me a bit to realize how big the changes have been in the last decade. In so many places - electricity from solar and wind is cheaper than electricity from fossil fuels, and now the batteries are coming down in costs very quickly. So it's very exciting news that needed to be told.

Believe in the power of your own voice. The more noise you make, the more accountability you demand from your leaders, the more our world will change for the better.

All I have to do is be the best Al I can be, because I'm good enough, I'm smart enough and, doggone it, people like me.

We have arrived at a moment of decision. Our home - Earth - is in grave danger. What is at risk of being destroyed is not the planet itself, of course, but the conditions that have made it hospitable for human beings.

George Orwell once wrote that a false belief sooner or later collides with physical reality, usually on a battlefield.

The catastrophe now threatening us is unprecedented - and we often confuse the unprecedented with the improbable.

Unless we act boldly and quickly to deal with the underlying causes of global warming, our world will undergo a string of terrible catastrophes.