While companies, countries, regulators, and researchers quarrel over whether and how to pursue a global deep-sea mining industry, the Cook Islands is slowly marching towards becoming the first place in the world to do it.

As climate change alters temperatures and ecosystems, more areas are developing the right conditions for fungi that cause infections like Valley Fever to move in and thrive. Scientists are working to set up a line of defense.

The Pittsburgh 2030 District cut carbon emissions by 52 percent last year. Covering over 135 million square feet of commercial space across 1,300 buildings, the effort shows what's possible when local businesses and policymakers come together behind a common cause.

As renewables get cheaper, countries around the world are also seeing stronger momentum toward building electrification: replacing systems in buildings that rely on natural gas with electrically-powered alternatives. That could spell good news for the green building sector, which is already having a busy year. 

Cities are positioning bike-filled streets as a way to meet their sustainability goals, improve public health and reduce traffic congestion. Many are cruising toward a tipping point on bike infrastructure.

The Girl Up Initiative Uganda is breaking down gender stereotypes for women by building safe spaces where young girls can learn life skills and build the confidence to take control over their futures.

Billions of dollars in U.S. renewable energy projects have been cancelled since the start of this year, but with new corporate investors and local players stepping in, the country's clean power sector may prove more resilient than some thought.

The Petaluma Reusable Cup Project generated a lot of buzz when it launched in 2024. The results are in, and they show promise for scaling city-wide reuse programs.

Danone and Sistema.bio are bringing biodigesters to smallholder dairy farms, many with fewer than 20 cows, at no cost. The technology will help improve farmer livelihoods in emerging markets while decarbonizing the sector.

Depleted groundwater poses a serious threat to communities and farms in California's Central Valley, but scientists say the region's cropland might also be critical for refilling the underground aquifers holding that water.

Gig economy drivers say they're working more and earning less. Some are so fed up with the likes of Uber and Lyft that they're banding together to form worker-owned cooperatives to compete with them.

Only about 14 percent of U.S. commercial fleets included electric vehicles last year, but even as federal policies shift, signs point to continued and accelerated growth. Companies like Amazon are adding thousands of EVs to their fleets, and research shows fleet operators using EVs today have a 90 percent likelihood of purchasing more.