Sources: The Center for Public Integrity , , DOE, Rosatom
quote: Others like Princeton University Professor Christopher Chyba -- a nuclear weapons expert and a member of President Obama’s 18-person Council of Advisors on Science and Technology -- sit somewhere in the middle. He argues that the U.S. and its allies need to increase spending for asteroid surveys to predict potential threats, which could be averted with mechanical solutions such as Professor Melosh's. On the other hand, since surveys could miss a dangerous asteroid, he supports a nuclear solution too.
quote: I agree. Don't blow the asteroid up. Intercept it and change its orbit to put it into near Earth orbit.