“COP16 [in Cancun] changed my life. Of course I was aware of climate change problems before then, but my depth of knowledge increased so much that I realized we could not ignore the problems. It needed to be a priority.”
How to Make Friends in Outer Space
When Carl Sagan's team sent two gold-plated records into space in 1977, it wanted to make alien contact. Forty years later, those time capsules are hurtling beyond the reaches of the Solar System, still seeking intelligent life.
