Scientists rank all the ways an asteroid can kill you

Tonight, a particularly large asteroid is going to cruise by Earth at its closest point in 400 years, and while we humans are going to be observing the flyby at a safe distance, there's always a small twinge of doubt that whispers "what if...?" in the back of our minds. Scientists led by Clemens Rumpf of the University of Southampton in the UK decided to answer that question by figuring out what aspects of an asteroid collision are actually the biggest threats to human existence. The results mig