The Right Planet:
Temperature
n
Varies from place to place
on Earth, but:
u
Few above boiling
u
Some below freezing
n
Contrast Venus, about 900
o
F (500
o
C).
n
Contrast Mars, barely gets
above freezing in
midsummer at the equator.
n
Earth is warm enough for
water to be liquid, cool
enough not to destroy
biomolecules.