Although the earth is vast, its most vulnerable point is the atmosphere, which is surprisingly thin. As the late Carl Sagan used to say, it's like a coat of varnish on a globe.


Our World Is Facing a Climate Crisis, speech excerpted in MoveOn.org ad, The New York Times, Feb. 20, 1994


Although the earth is vast, its most vulnerable point is the atmosphere, which is surprisingly thin. As the late Carl Sagan used to say, it's like a...

Although the earth is vast, its most vulnerable point is the atmosphere, which is surprisingly thin. As the late Carl Sagan used to say, it's like a...

Although the earth is vast, its most vulnerable point is the atmosphere, which is surprisingly thin. As the late Carl Sagan used to say, it's like a...

Although the earth is vast, its most vulnerable point is the atmosphere, which is surprisingly thin. As the late Carl Sagan used to say, it's like a...