Climate Engineering is a Controversial "Plan B" for Global Warming
Can we engineer Earth's atmosphere to stop global warming?
The 1991 eruption of Mount Pinatubo in the Philippines blanketed the Earth with a haze of sulfur dioxide that temporarily cooled global temperatures by one degree Fahrenheit. Some scientists now see the intentional injection of sulfur dioxide into the stratosphere as a potentially cheap and easy way to counteract global warming. Others warn of potentially deadly unintended consequences.