The secret ingredient is meteorite powder.
We should work out the consequences of filling the sky with sulfur before doing so, researchers urge.
Even after the densest clouds disperse, the effects from smoke last longer and travel farther than you might think.
But is that a good thing?
As the sky goes dark, robots will conduct atmospheric science.
Foot loose and frost-free.
Fasten your seatbelt
Streaming live at 2 PM EST
Don't worry: Those shooting stars outside your window are only pieces of your spaceship
And to think some people call climate science worthless.
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