High-speed bus systems in crowded urban areas have taken off from Brazil to China, but introducing this form of mass transit to the teeming Indian capital of New Delhi has proven to be a vexing challenge.

Although it may seem simple, measuring rainfall worldwide has proven to be a difficult job for scientists. But a recently launched satellite is set to change that, providing data that could help in understanding whether global rainfall really is increasing as the planet warms.

The draft of the latest report from the Intergovernmental Panel on Climate Change warns that the world faces serious risks from warming and that the poor are especially vulnerable. But it avoids the kinds of specific forecasts that have sparked controversy in the past.

As these photographs and illustrations show, architect David Waggonner has decided that the best way to protect low-lying New Orleans is to think about water in an entirely different way.

With some species of Arctic birds experiencing steep drops in population and their prey also undergoing marked shifts, scientists are working to understand what role climate change is playing in these unfolding ecological transformations.

Powered by solar panels and biomass, microgrids are spreading slowly across India, where 300 million people live without electricity. But can these off-grid technologies be scaled-up to bring low-carbon power to tens of millions of people?

As the world becomes more urbanized, researchers and city managers from Baltimore to Britain are recognizing the importance of providing urban habitat that can support biodiversity. It just may be the start of an urban wildlife movement.

Photographer Peter Essick has traveled the world documenting the causes and consequences of climate change. In a Yale Environment 360 photo essay, we present a gallery of images Essick took while on assignment in Antarctica, Greenland, and other far-flung locales.

By encouraging the adoption of innovative architectural design and energy-saving technologies, Singapore has emerged as a model of green building in Asia — an important development in a region that is urbanizing more rapidly than any other in the world.

From Britain to the Czech Republic, European nations have been restoring rivers to their natural state — taking down dams, removing levees, and reviving floodplains. For a continent that long viewed rivers as little more than shipping canals and sewers, it is a striking change.

India is planning to burn more of its trash to generate badly needed electricity. But as the case of a waste-to-energy plant in New Delhi shows, critics are worried about lax air pollution controls and the impact of incineration on people who eke out a living picking through waste dumps.

After three decades of unbridled economic growth and mounting ecological problems, China and its new leadership face a key challenge: cleaning up the dirty air, polluted water, and tainted food supplies that are fueling widespread discontent among the country’s burgeoning middle class.

Recent studies in Asia and Australia found that community-managed areas can sometimes do better than traditional parks at preserving habitat and biodiversity. When it comes to conservation, maybe local people are not the problem, but the solution.

As evidence mounts that excessive use of light is harming wildlife and adversely affecting human health, new initiatives in France and elsewhere are seeking to turn down the lights that flood an ever-growing part of the planet.

Climate scientists and humanitarian relief workers need to collaborate far more closely to prepare for a future of increased extreme weather events. In an interview with Yale Environment 360, Harvard University public health expert Jennifer Leaning analyzes the results of a meeting between these two very different factions.

A move by New York City to begin collecting food scraps and other organic waste is just the latest example of expanding efforts by municipalities worldwide to recycle large quantities of unused food and slash the amount of material sent to landfills.

Environmental questions about Canada’s massive tar sands development have long centered on greenhouse gas emissions. Now there are mounting concerns about the huge volumes of water used by the oil industry and the impact on the vast Mackenzie River Basin.

Vietnam has become one of the world’s leading rice producers, thanks to the construction of an elaborate network of dikes and irrigation canals. But these extensive infrastructure projects in the storied Mekong Delta have come at a high ecological price.

New UN projections forecast that world population will hit nearly 11 billion people by 2100, an unsettling prospect that reflects a collective failure to provide women around the world with safe, effective ways to avoid pregnancies they don't intend or want.

Scientists studying a prolonged and severe drought in the southwestern U.S. say that extensive damage done to trees in that region portends what lies in store as other forests worldwide face rising temperatures, diminished rainfall, and devastating fires.