Slate: 15 facts about our planet
Published 3:14 pm Tuesday, April 23, 2013
It’s easy to take Earth for granted, since we see it every day. It becomes — it is — part of life’s background.
Published 3:14 pm Tuesday, April 23, 2013
It’s easy to take Earth for granted, since we see it every day. It becomes — it is — part of life’s background.
