Climate change threatens cactuses with extinction

The cactus is known for being able to thrive in some of the driest and hottest climates, but a new study estimates in the 30 years, global warming will put 60% of the world's cactuses at greater risk of extinction. Michiel Pillet, a member of the IUCN Species Survival Commission, joins CBS News to discuss the threat and what it means for our ecosystem.