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.

Approximately one in four children worldwide will live in regions with extremely scarce water resources by 2040, UNICEF said in a report Wednesday.

Stranded on their rooftops by flooding and mudslides, residents of Huarmey, Peru ironically need the one thing they see everywhere they look: water.

Dubai on Monday completed a solar plant big enough to power 50,000 homes as part of a plan to generate three-quarters of its energy from renewables by 2050.

Torrential rains triggered flash floods in the Peruvian capital Lima, stranding thousands of people Friday and forcing rescuers to find ways to evacuate them across roads turned to raging rivers.

World Bank investments in commercial financial institutions are indirectly allowing land-grabs, evictions and pollution in Southeast Asia, a watchdog group charged in a report Friday.

Renault on Wednesday said it "formally denies" cheating in emissions tests, in response to a report claiming it had done so for over 25 years with the knowledge of top management.

A blizzard tracking north from the United States caused car pileups and school closures, as heavy snows and powerful winds paralyzed eastern Canada Wednesday.