From a distance, it looks like a deep-blue sea has formed in the middle of the Mexican desert.

Former New York City mayor and billionaire philanthropist Michael Bloomberg on Sunday promised $4.5 million to fulfill the United States's commitment to the Paris climate agreement.

It was third time unlucky for a Colorado man attacked by a shark in Hawaii -- as he had already been mauled by a bear and bitten by a rattlesnake, all in less than four years, local media reported.

California has the most polluted cities in the United States, a report issued on Wednesday said, as President Donald Trump's administration seeks to force the state to weaken its vehicle emissions standards.

China has a found a novel way to tackle its massive air pollution problem: Putting up a giant air purifier the size of an industrial smokestack in the middle of a smog-plagued city.

Prime Minister Justin Trudeau has said his government is holding "financial discussions" and weighing legislation to help resolve a high-stakes clash between two Canadian provinces over a major pipeline project.

A prominent American lawyer and gay rights activist has died after setting himself on fire at a New York park to protest damage being done to the planet, according to U.S. media reports.

A trial date has been set for October 29 in the case of nearly two dozen U.S. youths suing the U.S. government for failing to protect public resources by burning fossil fuels.

A man has been found dead and several people are missing after a landslide engulfed houses in southern Japan on Wednesday, local officials said.

Shallow wells dug for drinking water in the Amazon basin in order to avoid polluted rivers contain up to 70 times the recommended limit of arsenic, researchers warned Tuesday.