Extras

Video thumbnail: NOVA What is Solar Geoengineering and Why is it Controversial?

NOVA

What is Solar Geoengineering and Why is it Controversial?

Solar geoengineering is like drawing a curtain over the face of the Earth.

What is Solar Geoengineering and Why is it Controversial?

Video thumbnail: NOVA How Much Coal Do People Burn Each Year?

NOVA

How Much Coal Do People Burn Each Year?

See how much CO2 we add to the atmosphere each year.

How Much Coal Do People Burn Each Year?

Video thumbnail: NOVA Can We Cool the Planet? Promo

NOVA

Can We Cool the Planet? Promo

Scientists look to geoengineering and other methods to cool the planet.

Can We Cool the Planet? Promo