January 01, 2015 - 5:00 AM
He calls the video An Astronaut's Guide to Optimism.
Canada's Chris Hadfield wants us to stop and reflect on just how far we've come.
He says our world is not as bad a place as we often feel it to be.
Also today on Trending Now, David Letterman accidently eats some brownies intended for Willie Nelson. Christoph Waltz talks to Seth Myers about playing the new Bond villain. Ellen's brand new app game is tearing up the charts, and she played it with Meryl Streep, Emily Blunt and Anna Kendrick.
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