ACTIVISTS gather around Times Square as they mark the start of Climate Week in New York City, New York, US, Sept. 17, 2023. 鈥 REUTERS

THOUSANDS of protesters kicked off 鈥淐limate Week鈥 and filled the streets of Midtown, Manhattan, on Sunday ahead of the U.N. General Assembly this week, calling for President Joseph R. Biden and world leaders to end fossil fuel use.

With parades, concerts, and banging drums, some of the 15,000 expected waved signs that read 鈥淓nd Fossil Fuel Use鈥 and 鈥淔ossil Fuels Kill鈥 and 鈥淒eclare a Climate Emergency.鈥

One man was dressed as a melting snowman warning of rising sea levels. The message was for world leaders to save the planet from the use of oil and gas believed to be driving a warming globe.

Sunday鈥檚 protests were part of a week-long international effort by Climate Group, a non-profit whose purpose is to drive climate change action and stop global warming, with more than 500 protests planned in the US, Germany, England, South Korea, India and elsewhere, totaling 54 countries.

Organizers of the protests expect a global turnout of more than a million people.

鈥淐limate Week NYC is all about getting it done,鈥 organizers wrote online. 鈥淭hrough celebrating climate action, challenging ourselves to do more, and exploring ways to increase ambition, Climate Week NYC inspires, amplifies and scrutinizes the commitments, policies and actions of those with the power to make change happen.鈥

Many scientists believe that so-called greenhouse gases caused by burning fossil fuels are warming the world and causing severe weather such as more intense hurricanes, heat waves, floods, wildfires and droughts.

Reductions in CO2 or carbon dioxide emissions are seen as a key element in abating climate change.

The demonstrations take place two months before this year鈥檚 U.N. COP28 climate summit, where more than 80 countries plan to push for a global agreement to gradually phase out coal, oil and gas.

A recent U.N. report warned that the world was on a dangerous track toward severe global warming, and said more action was needed on all fronts, including drastic drop in coal-fueled power use by 2030, Reuters reported. 鈥 Reuters