Neil deGrasse Tyson Quotes:
Ocupation: Astrophysicist
Life: b. October 5, 1958
Birthday: October 5
If you get asteroids about a kilometer in size, those are large enough and carry enough energy into our system to disrupt transportation, communication, the food chains, and that can be a really bad day on Earth.
source: "Cosmic Coincidence: Asteroid Careens by as Meteor Delivers ‘Buzz Cut’ to Earth". www.pbs.org. February 15, 2013. 
topic: Communication, Bad Day, Energy, Food Chain, Really Bad Days
