The world must take "radical action" to shift away from fossil fuels, including investing $5.7 trillion annually in solar, wind and other forms of clean power this decade to ensure that global warming doesn't pass dangerous thresholds, the head of the International Renewable Energy Agency said Tuesday.

Other measures proposed in a 348-page report on the global energy transition include improving energy efficiency, increasing electrification, capturing carbon emissions and expanding the use of hydrogen gas.

A Sumatran rhino has successfully given birth in an Indonesian sanctuary, environment officials said, in a boost for conservation efforts targeting the critically endangered animal.

The World Wide Fund for Nature estimates fewer than 80 Sumatran rhinos remain in the world, mainly on the Indonesian island of Sumatra and Borneo.

Hong Kong's deadliest coronavirus outbreak has cost about 6,000 lives this year – and the city is now running out of coffins.

Authorities have scrambled to order more, with the government saying 1,200 coffins had reached the city last week with more to come.

The Middle East is the most water-scarce region in the world, but participants at an upcoming climate summit in Dubai will be ensconced in a resort with one of the world's largest water parks, complete with artificial lagoons, encounters with dolphins and a mesmerizing aquarium with sharks, sting rays and schools of fish.

It's a striking backdrop for a climate summit aimed at tackling lack of water and other pressing issues facing the region due in part to warming global temperatures from the very fossil fuels produced by Gulf Arab states and others. The Arabian Peninsula, where Dubai sits, is grappling with menacing sand storms, rising temperatures and dangerous humidity levels.

Without Russian help, climate scientists worry how they'll keep up their important work of documenting warming in the Arctic.

Europe's space agency is wrestling with how its planned Mars rover might survive freezing nights on the Red Planet without its Russian heating unit.

At first glance, the Souq Waqif clinic in the historic center of Doha, the capital of Qatar, could be any other state-of-the-art hospital.

Nurses in blue scrubs move briskly through the bright wards, conducting rounds. Radiology and operating rooms whir with the beeps and blinks of monitors. Specialists squint at X-rays and masked doctors make incisions with all the high-tech tools of modern surgery on hand.

The chief of the United Nations announced a project Wednesday to put every person on Earth in range of early weather-warning systems within five years as natural disasters have grown more powerful and frequent due to climate change.

U.N. Secretary-General Antonio Guterres said the project with the Geneva-based World Meteorological Organization aims to make the alert systems already used by many rich countries available to the developing world.

As Morocco withers under its worst drought in 40 years, experts warn that a combination of climate change and bad resource management could trigger severe drinking water shortages.

"The country hasn't seen a situation like this since the start of the 1980s," said water policy expert Abderrahim Hendouf.

Untapped groundwater resources have "vast potential," the U.N.'s cultural agency said Monday, potentially alleviating demand for ever-scarcer water supplies across the world.

Nearly 200 nations gathered Monday to grapple with a question that will outlive Covid-19 and Russia's invasion of Ukraine: how does a world addicted to fossil fuels prevent carbon pollution from making Earth unlivable?