You could run outside wearing shorts on Mars. If there was any air.

The Martian lander is finding some odd things way up (over? down?) there on Mars:

Curiosity’s onboard weather station, which is called the Remote Environment Monitoring Station (REMS), has measured air temperatures as high as 43 degrees Fahrenheit (6 degrees Celsius) in the afternoon. And temperatures have climbed above freezing during more than half of the Martian days, or sols, since REMS was turned on, scientists said.

Forty-three degrees. Not even below freezing! I go running in a t-shirt and shorts in that kind of weather!

On the other hand:

While Curiosity’s days are relatively pleasant weather-wise, the same can’t be said for the rover’s nights. Air temperatures drop dramatically after the sun goes down, plunging as low as minus 94 degrees Fahrenheit (minus 70 Celsius) just before dawn, scientists said.

Yikes. Gonna need an extra blanket.

Such big swings occur because the effects of solar heating are much more pronounced on Mars than they are on Earth. The Red Planet’s surface is much drier, and its atmosphere is just 1 percent as thick as Earth’s.

Know what Mars needs? More burning of fossil fuels!