NL_KaloperThursday on "The Alan Colmes Show," Alan spoke with physicist Nemanja Kaloper of the University of California Davis who has studied that the universe has a finite lifetime and could collapse on itself. The result? The end of all matter as we know it.

Alan and Kaloper discussed the timeline of when this event could happen, which had Alan concerned whether he should be buying green bananas. Kaloper assured him that he should probably still do his taxes, since the end of the universe is millions of years away. They also talked about how Kaloper first came up with the theory, how life in universe was created, and if we know how old the universe actually is.

Listen to the interview here: