Oil drilling in the Gulf Coast didn’t start and stop with the 2010 Deepwater Horizon oil disaster. But the practice is younger than you might think. In 1947, there was just one oil drilling site. In 2014, there were more than 30,000.
Ocean deadzones are spots in the sea where life no longer exists. They occur when massive fertilizer runoff (or other ocean crises) set in motion an oxygen-depriving chain of events leading to the death in one spot of fish, crabs and other sea creatures. In 1975, there was one documented deadzone. In 2014, there were 500+.