It starts with torrential rain in the mountains. Then a wall of mud and boulders comes barreling down the slopes, sweeping away houses, cars and people.

Conservationists on Monday captured a rare one-horned rhinoceros in Nepal as part of an attempt to increase the number of the vulnerable animals, which are prized by wildlife poachers.

Rescuers clawed through piles of mud and twisted debris Sunday searching for survivors after violent mudslides destroyed homes in southern Colombia, killing over 200 people and injuring hundreds more.

They were the latest victims of deadly floods and mudslides that have struck the Pacific side of South America over recent months, also killing scores of people in Peru and Ecuador.

Torrential rain hampered relief efforts Thursday after a powerful cyclone wreaked havoc in northeast Australia, with floods sparking emergency rescues as fed-up tourists began evacuating from resort islands.

President Donald Trump declared the end of a "war on coal" Tuesday, as he moved to curb rules that underpin American emissions targets and a major global climate accord.

Following through on an election promise, Trump signed an order to review some of his predecessor Barack Obama's climate legacy, declaring an end to "job-killing regulations."

U.S. President Donald Trump will on Tuesday roll back a slew of environmental protections enacted by Barack Obama, in a bid to untether the fossil fuel industry.

In a maiden trip to the Environmental Protection Agency, Trump will sign an "Energy Independence Executive Order," a White House official told AFP.

A "monster" cyclone smashed into northeast Australia Tuesday, cutting power, damaging buildings and uprooting trees, with coastal towns in lockdown as residents battled lashing rain and howling winds.

President Donald Trump will sign an executive order Tuesday to undo his predecessor Barack Obama's plan to limit greenhouse gas emissions from coal-fueled power plants, according to the new environmental chief.

The Empire State Building and United Nations headquarters in New York joined other iconic buildings and monuments around the world plunging into darkness for sixty minutes on Saturday to mark Earth Hour and draw attention to climate change.

From Sydney to New York, cities and monuments will dim their lights on Saturday in a show of solidarity against the threats being faced by the planet from humankind.

This year marks the tenth anniversary of Earth Hour, an annual bid to raise awareness about global warming caused by the burning of coal, oil and gas to power cars and power plants.