Extras
Scientists look to geoengineering and other methods to cool the planet.
Can We Cool the Planet? Promo
Meet the NASA Scientist Who Uses Lasers to Study Forests
This researcher shoots lasers at trees in order to measure how much carbon forests store.
Meet the NASA Scientist Who Uses Lasers to Study Forests
What is Solar Geoengineering and Why is it Controversial?
Solar geoengineering is like drawing a curtain over the face of the Earth.