India’s megacities have some the deadliest air and worst traffic congestion in the world. But Indian startups are now launching initiatives that link smart-phone apps and private shuttle buses and could help keep cars and other motorized vehicles off the roads.

The 'ōhi'a is Hawaii’s iconic tree, a keystone species that maintains healthy watersheds and provides habitat for numerous endangered birds. But a virulent fungal disease, possibly related to a warmer, drier climate, is now felling the island’s cherished 'ōhi'a forests.

Surprising new statistics show that the world economy is expanding while global carbon emissions remain at the same level. Is it possible that the elusive “decoupling” of emissions and economic growth could be happening?

With new marine protected areas and an emerging U.N. treaty, global ocean conservation efforts are on the verge of a major advance. But to enforce these ambitious initiatives, new satellite-based technologies and newly available online data must be harnessed.

Climate scientist James Hansen has crossed the classic divide between research and activism. In an interview with Yale Environment 360, he responds to critics and explains why he believes the reality of climate change requires him to speak out.

One of President Obama’s signature achievements on climate has been strict standards aimed at improving auto fuel efficiency to nearly 55 miles per gallon by 2025. But credits and loopholes, coupled with low gas prices, may mean the U.S. will fall well short of this ambitious goal.

Until recently, little was known about the extent of methane leaking from urban gas distribution pipes and its impact on global warming. But recent advances in detecting this potent greenhouse gas are pushing U.S. states to begin addressing this long-neglected problem.

Researchers are only beginning to understand the complexities of the microbes in the earth’s soil and the role they play in fostering healthy ecosystems. Now, climate change is threatening to disrupt these microbes and the key functions they provide.

Low gasoline prices and continuing performance issues have slowed the growth of electric car sales. But that has not stymied progress in electrifying larger vehicles, including garbage trucks, city buses, and medium-sized trucks used by freight giants like FedEx.

Subsistence hunters in the Arctic have long taken to the sea ice to hunt seals, whales, and polar bears. But now, as the ice disappears and soaring temperatures alter the life cycles and abundance of their prey, a growing number of indigenous communities are facing food shortages.

Angel Garcia, of Young Conservatives for Energy Reform, is working to persuade Republicans about the need for renewable energy. In an interview with Yale Environment 360, he explains why his group avoids mentioning climate change when it makes its pitch to conservatives

Curt Guyette is an investigative reporter who dug deeper into the Flint water crisis. In an interview with Yale Environment 360, he explains his work as a journalist employed by a Michigan nonprofit and how it could be a model for in-depth, local reporting on the environment.

In the wake of the Paris climate agreement, developing countries find themselves in need of analysts capable of monitoring their emissions. It’s a complex task, but organizations are stepping in with online courses to train these new green accountants.

Landscape architect Kristina Hill focuses on helping cities adapt to climate change, particularly sea level rise. In an interview with Yale Environment 360, she discusses the challenges, solutions, and costs of saving cities from encroaching oceans.

China’s lucrative black market for fish parts is threatening the vaquita, the world’s most endangered marine mammal. The porpoises, who live only in the Gulf of California, are getting caught up as bycatch in illegal gill nets and killed.

Development pressures are threatening Istanbul's centuries-old gardens, which have produced food for the city's markets since Byzantine times. A coalition of gardeners and environmentalists is fighting to preserve them.

With the recent opening of a “bike highway,” Germany is taking the lead in Europe by starting to build a network of wide, dedicated bicycle thoroughfares designed to lure increasing numbers of commuters out of their cars and onto two wheels.

The U.S. Supreme Court order blocking President Obama’s plan to cut emissions from coal-burning power plants is an unprecedented step and one of the most environmentally harmful decisions ever made by the nation’s highest court.

The U.S. Supreme Court order blocking the Obama administration's Clean Power Plan may have a silver lining: It provides an opportunity for the U.S. to show other nations it has a flexible, multi-faceted approach to cutting emissions.

This year’s El Niño phenomenon is spawning extreme weather around the planet. Now scientists are working to understand if global warming will lead to more powerful El Niños that will make droughts, floods, snowstorms, and hurricanes more intense.