Competition, not cooperation, has driven the bulk of climate progress over the past few years.
Government scientists have spent a year analyzing electric vehicles to help the E.P.A. design new tailpipe rules to trigger an electric car revolution.
Once a building ground for battleships, the site is a city-within-a-city where companies can test their solutions for a greener future.
The state is setting strict limits to try to eliminate carbon dioxide emissions from transportation, the sector of the American economy that generates the most greenhouse gases.
The Biden administration hopes its guidelines for up to $7,500 in tax credits will encourage automakers to reduce their reliance on China for batteries and raw materials.
E.V.s are usually a more climate-friendly option. But as they bulk up, their emissions savings, and other environmental and safety benefits, begin to diminish.
Americans can get tax credits to go electric, but only if they have cash upfront. Other countries have programs, too.
One county has a wealth of minerals essential to defense and the green economy. Mining would transform the community, yet many say they feel a patriotic obligation to dig.
Countries are pursuing new solutions to try to mitigate climate change. More trade fights are likely to come hand in hand.
The revolution is also a case study in how much further we have to go.