United Nations climate negotiations in Madrid were set to wrap up Friday with even the best-case outcome likely to fall well short of what science says is needed to avert a future ravaged by global warming.

The COP25 summit comes on the heels of climate-related disasters across the planet, including unprecedented cyclones, deadly droughts and record-setting heatwaves. 

U.S. President Donald Trump on Thursday slammed Time magazine's naming of Greta Thunberg as 2019 Person of the Year, saying the climate activist should "chill" and go see a movie.

Swedish activist Greta Thunberg accused rich countries of "misleading" people over climate action at U.N. talks in Madrid on Wednesday as scuffles broke out between security guards and environmental protesters.  

Greta Thunberg, the Swedish teenager who became the voice of conscience for a generation facing the climate change emergency, was named Wednesday as Time magazine's 2019 Person of the Year.

The United States and Saudi Arabia are among major polluters showing "hardly any signs" of reducing their greenhouse gas production, a global assessment of countries' emissions trajectories said Tuesday at United Nations climate talks.

Out of control bushfires forced residents in eastern Australia to flee their homes on Saturday, as other parts of the country braced for a heatwave due next week.

Thousands of activists from around the globe will simultaneously hit the streets of Madrid and Santiago on Friday to demand urgent action on the climate crisis from world leaders attending the COP25 summit.

The radical environmental activist group Extinction Rebellion on Thursday claimed the sabotage of 3,600 electric scooters in Paris and other French cities, saying the green image of the fashionable gadgets hid an "ecologically catastrophic" reality.

Japan, the Philippines and Germany top a list of countries worst hit by climate-enhanced extreme weather last year, with Madagascar and India close behind, researchers said Wednesday.

This decade is set to be the hottest in history, the United Nations said Tuesday in an annual assessment outlining the ways in which climate change is outpacing humanity's ability to adapt to it.