The withered carcasses of livestock are reminders that drought has descended yet again in northern Kenya, the latest in a series of climate shocks rippling through the Horn of Africa.

As world leaders address a global climate summit in Glasgow, pastoralists watch their beloved animals suffer from lack of water and food. Yusuf Abdullahi says he has lost 40 goats.

With pressure growing for decisive action out of this year's U.N. climate talks, Barack Obama is bringing his political weight to bear Monday on negotiators for nearly 200 governments, urging them to greater ambition in cutting climate-wrecking emissions and dealing with the mounting damage.

The U.N. climate summit in Glasgow, Scotland, is the former American president's first since he helped deliver the triumph of the 2015 Paris climate accord, when nations committed to cutting fossil fuel and agricultural emissions fast enough to keep the Earth's warming below catastrophic levels.

While conducting research in Greenland, ice scientist Twila Moon was struck this summer by what climate change has doomed Earth to lose and what could still be saved.

The Arctic is warming three times faster than the rest of the planet and is on such a knife's edge of survival that the U.N. climate negotiations underway in Scotland this week could make the difference between ice and water at the top of the world in the same way that a couple of tenths of a degree matter around the freezing mark, scientists say.

Majestic, increasingly hungry and at risk of disappearing, the polar bear is dependent on something melting away on our warming planet: sea ice.

In the harsh and unforgiving Arctic, where frigid cold is not just a way of life but a necessity, the polar bear stands out. But where it lives, where it hunts, where it eats — it's disappearing underfoot in the crucial summertime.

Combining two of Italy's delights — coffee and sunshine — a couple of engineers in Rome have created an environmentally friendly way to roast coffee beans without electricity or gas.

Antonio Durbe and Daniele Tummei have spent almost six years building and perfecting their sunlight coffee roaster.

Silflower was among native plants that blanketed the vast North American prairie until settlers developed farms and cities. Nowadays confined largely to roadsides and ditches, the long-stemmed cousin of the sunflower may be poised for a comeback, thanks to solar energy.

Researchers are growing silflower at nine solar installations in the Minneapolis area, testing its potential as an oilseed crop. The deep-rooted perennial also offers forage for livestock and desperately needed habitat for bees, butterflies and hummingbirds.

When a rotten egg smell rises from the mangrove swamps of southeast Mexico, something is going well. It means that this key coastal habitat for blunting hurricane impacts has recovered and is capturing carbon dioxide — the main ingredient of global warming.

While world leaders seek ways to stop the climate crisis at a United Nations conference in Scotland this month, one front in the battle to save the planet's mangroves is thousands of miles (kilometers) away on Mexico's Yucatan Peninsula.

With pledges for a United Nations climate conference, the world may be ever so slightly receding from gloomy scenarios of future global warming, according to two new preliminary scientific analyses Thursday.

The two reports — one by the International Energy Agency and the other by Australian scientists — focused on optimistic scenarios. If all goes right, they said, recent actions will trim two-or three-tenths of a degree Celsius (0.3 to 0.5 degrees Fahrenheit) from projections made in mid-October.

The generation of young people who will inherit a warmer future is telling the generation that caused carbon pollution to clean up its mess — from both inside and outside United Nations climate talks.

Or better yet, let us do it ourselves, many say.

Authorities on the Spanish island of La Palma are telling people who live near an erupting volcano to stay indoors because of a heavy fall of ash that has forced the cancellation of flights and school classes.

The Cumbre Vieja volcano on La Palma, which is part of Spain's Canary Islands off northwest Africa, has been spewing lava, ash and gases for more than six weeks. The eruption has alternately surged and ebbed since Sept. 19.