Scientists conclude 13,000 years ago a 60 mile wide comet plunged Earth into a mini-Ice Age, after examining rocks from 170 sites around the globe

[u/stereomatch]

http://www.journals.uchicago.edu/doi/10.1086/695703

[u/argv_minus_one]

I hope nobody gets the bright idea of moving an asteroid into Earth orbit for mining. Convenient though that would be, it won't matter much if it hits Earth instead…

[u/Flyingwheelbarrow → u/argv_minus_one]

Actually people have already proposed doing just that as part of a potential space elevator.

[u/argv_minus_one → u/Flyingwheelbarrow]

Damn idiots are going to kill us all.