NASA climate scientist and astronaut Piers Sellers recently announced that he had Stage 4 pancreatic cancer in an emotional article for the New York Times. Born in the U.K., Dr. Sellers became a U.S. citizen 1991 to be an astronaut. He's flown on three space shuttle missions between 2002 and 2010. He plans to continue his work researching the effects and cause of climate change.

"I’m very grateful for the experiences I’ve had on this planet. As an astronaut I spacewalked 220 miles above the Earth. Floating alongside the International Space Station, I watched hurricanes cartwheel across oceans, the Amazon snake its way to the sea through a brilliant green carpet of forest, and gigantic nighttime thunderstorms flash and flare for hundreds of miles along the Equator. From this God’s-eye-view, I saw how fragile and infinitely precious the Earth is. I’m hopeful for its future. And so, I'm going to work tomorrow."

To read Seller's piece for the New York Times, click here.

For the full story from the Daily Mail, click here.