Let's Walk on the Moon!

Forty years after a man first walked on the moon, in and age where trips into space seem almost routine, Neil Armstrong’s small step for man really does seem like a giant leap for mankind. In his new book, Voices from the Moon, Andrew Chaikin uses interviews with 22 of the 23 Apollo astronauts to describe what it feels like to take off from the space station, see the Earth from space, and walk on the moon! Listen to the Show

Sniffing Out Carbon Dioxide from Space

NASA has launched a new satellite that will help identify, in unprecedented detail, where carbon dioxide is being emitted and where it’s being sucked up. The idea is to provide a clearer picture of what has happened, what is happening, and what might happen to all of the CO2 humans have produced since the beginning of the Industrial Revolution in 1750.