A study commissioned by the environmental group Greenpeace shows that over one-third of the busiest short-haul flights in Europe have viable train alternatives which are far less polluting.

The group called on European governments Wednesday to boost train travel so fewer polluting planes are flying over the continent. The study by OBC Transeuropa showed that 34% of the 150 busiest short-haul flights have train trip alternatives of less than 6 hours.

The global energy transition is perhaps nowhere more perplexing than in the Arabian Peninsula, where Saudi Arabia and other Gulf monarchies are caught between two daunting climate change scenarios that threaten their livelihoods.

In one, the world stops burning oil and gas to cut down on heat-trapping emissions, shaking the very foundation of their economies. In the other, global temperatures keep rising, at the risk of rendering unlivable much of the Gulf's already extremely hot terrain.

The leaders of Russia and China aren't coming. Turkey nearly set off a diplomatic incident on the eve of the meeting. And the United States, Australia and France will be at the same table for the first time since Washington pulled the rug out from under Paris' $66 billion submarine deal Down Under.

A Group of 20 summit scheduled for this weekend in Rome - the first in-person gathering of leaders of the world's biggest economies since the COVID-19 pandemic started - is not business as usual. That's especially true since as soon as the event ends, a bigger United Nations summit devoted to climate change begins in Glasgow, Scotland.

Climate activists in hard hats scaled a U.K. government building Tuesday, unfurling a banner demanding that countries attending the upcoming U.N. climate conference invest in plant-based alternatives to meat.

The activists campaigning for Animal Rebellion climbed between 10 meters and 20 meters (32 feet to 65 feet) up the latticework decoration of the building which houses the Department for Environment, Food & Rural Affairs. The activists are an offshoot of Extinction Rebellion, which has blocked traffic, disrupted public transport and set up encampments to gain attention and press for stronger action against climate change.

The head of the United Nations says a "leadership gap" is undermining the world's efforts to curb global warming, days before presidents and prime ministers from around the globe gather for a climate summit in Glasgow.

U.N. Secretary-General Antonio Guterres told reporters Tuesday that time is running out to cut greenhouse gas emissions to meet the goals of the 2015 Paris accord and avert global warming that could damage the planet.

Glasgow sits proudly on the banks of the river Clyde, once the heart of Scotland's industrial glory and now a Launchpad for its green energy transition. It's a fitting host for the United Nations' climate conference, COP26, where world leaders will be discussing how their countries will reduce the greenhouse gas emissions that are driving climate change.

I've been involved in climate negotiations for several years as a former senior U.N. official and will be in Glasgow for the talks starting Oct. 31, 2021. As negotiations get underway, here's what to watch for.

A powerful storm that swept through California set rainfall records and helped douse wildfires. But it remained to be seen how much of a dent it made in the state's drought.

The system weakened as it moved south but still dropped enough rain Monday evening to cause mudslides that closed roads in the San Bernardino Mountains northeast of Los Angeles.

Conflicts over water are as old as history itself, but the massive Google data centers on the edge of this Oregon town on the Columbia River represent an emerging 21st century concern.

Now a critical part of modern computing, data centers help people stream movies on Netflix, conduct transactions on PayPal, post updates on Facebook, store trillions of photos and more. But a single facility can also churn through millions of gallons of water per day to keep hot-running equipment cool.

A powerful storm barreled toward Southern California after flooding highways, toppling trees and causing mud flows in areas burned bare by recent fires across the northern part of the state.

Drenching showers and strong winds accompanied the weekend's arrival of an atmospheric river — a long and wide plume of moisture pulled in from the Pacific Ocean. The National Weather Service's Sacramento office warned of "potentially historic rain."

The Canadian coast guard has evacuated 16 people from a burning container ship that is expelling toxic gas off Canada's Pacific coast, but there is "no safety risk" to those on shore, authorities said Sunday.