Researchers believe that artificial photosynthesis that sucks excess CO2 out of the air could one day help fight climate change. But capturing the gas is only half the challenge. The other half is what to do with it once you've got it. Lauren Sommer reports on a potentially breakthrough technology that uses artificial photsynthesis to turn CO2 from the air into industrial chemicals and natural gas.
Trees are nature's tool for pulling carbon dioxide out of the air, but there aren't enough trees in the world to suck up all the CO2 humans are putting there. That's why researchers are pushing to create artificial leaves to help fight climate change. The World's Ari Daniel visits with two teams of researchers pursuing different approaches to the formidable challenge.
A new report in the British medical journal The Lancet says climate change poses a potentially catastrophic risk to human health. But it also says fighting climate change can bring big health benefits.
“Cultural revolution” and “radical change” are terms you might not expect to come out of the Vatican. But that’s language Pope Francis is using to talk about what he says is need to save planet earth and all of humanity along with it.
President Obama has given Shell the green light to drill for oil in the Arctic Ocean, but activists and politicians in Seattle are throwing up as many stop signs as they can as the drilling rig preps there for its journey north. It's the latest flashpoint in the growing international anti-fossil fuel movement.
On the Tanzanian island of Zanzibar, hundreds of households too poor and remote to have access to the electrical grid are getting low cost solar power for the first time, from a group of local female engineers trained by and Indian NGO. It's the first of several "solar mamas" projects planned for parts of rural Africa, and it's turning some traditional gender roles on their head.
Tesla is famous for its electric cars, and it's now moving into the world of batteries. The company introduced new systems designed to store power from unreliable wind and solar sources, hoping to make a fortune and change the energy market forever.