Meteorite energy variation with size. (Image by Dr. Ila Pillalamarri.)

The New York Times has posted a video interview with MIT Earth, Atmospheric, and Planetary Sciences Professor Richard P. Binzel about today’s meteor strike in Siberia.
For more information on meteor strikes, have a look at 12.091 Basics of Impact Cratering & Geological, Geophysical, Geochemical, Environmental Studies of Some Impact Craters of the Earth.
Also, check out 12.400 The Solar System, a course by Professor Binzel.