Getting Warmer with Kal Penn

New Jersey company TerraCycle promises it can recycle things like cigarette butts and dirty diapers. But do these items actually get recycled?

From sea walls to oyster reefs, we look at projects designed to protect New York City against the next Superstorm Sandy.

Evaluating extreme Plan Bs against climate change, from boosting oceans’ CO2 absorption to managed retreat from vulnerable regions.

How can the western United States cope with a long-term megadrought? Is recycled wastewater a solution to the world’s limited water supply?

Is there a sustainable way to meet increasing demand for air conditioning? What are the costs and benefits of 'cold chains' as food travels the globe?

A visit to the Nevada company building America’s first closed-loop supply chain for electric vehicles; examining the industry’s reliance on carbon.

Everything from air conditioners to agriculture proves methane is a threat. Strategies like regenerative agriculture can help tackle it.

How retrofitting buildings to reduce their carbon footprint could eliminate a large amount of emissions.

The palm oil industry illustrates how industrial agriculture can damage the environment, and how we can learn from nature to grow food sustainably.

We visit a community reliant on fossil fuels as they choose between a lucrative new oil proposal and a transition toward renewables.

Problems inherent to the carbon offset market: how companies claim them when they shouldn’t and why tree planting isn’t always a good strategy.