Michio Kaku: Will Mankind Destroy Itself?

Theoretical physicist Michio Kaku sees two major trends today. One eventually leads to a multicultural, scientific, tolerant society that will expand beyond Earth in the name of human progress. The other trend leads to fundamentalism, monoculturalism, and - eventually - civilizational ruin. Whichever of these two trends wins out will determine the fate of mankind. No pressure, everyone.