"I believe global warming and climate change are real threats to our planet"

"Wonder if there is life on another planet? Let's suppose there is. Suppose further, that only one star in a trillion has a planet that could support life. If that were the case, then there would be at least 100 million planets that harbored life"

"It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small"

"Here men from the planet Earth first set foot upon the Moon. July 1969 AD. We came in peace for all mankind"

"How inappropriate to call this planet Earth when it is quite clearly Ocean"

"I think I got off on the wrong planet. Beam me up Scotty, there's no rational life here"

"Now, we put out a lot of carbon dioxide every year, over 26 billion tons. For each American, it's about 20 tons. For people in poor countries, it's less than one ton. It's an average of about five tons for everyone on the planet. And, somehow, we have to make changes that will bring that down to zero"

"Two hundred or more years ago most people on the planet were never aware of any reality other than the one into which they were brought up"

"I did not want to be a tree, a flower or a wave. In a dancer's body, we as audience must see ourselves, not the imitated behavior of everyday actions, not the phenomenon of nature, not exotic creatures from another planet, but something of the miracle that is a human being"

"We're looking at Earth science, observing our planet. Also space science, looking at the ozone in the atmosphere around our Earth. Also looking at life science. And on a human level, using ourselves as test subjects"

"All the things that human beings suffer from are how their environment treats them, and how the elements of their planet affects their mind and body - like radiation, cancer, and all"