PARIS (AP) — The latest from the much-anticipated U.N. climate conference that gets underway in Paris on Monday. All times local:

14:35 a.m.

Multiple sources have told The Associated Press that countries, high-powered companies and business leaders will announce an effort Monday to put tens of billions of dollars toward clean energy technology to fight climate change.

A French source who was not authorized to speak publicly said French president Francois Hollande will attend the event they call the "Clean Tech Initiative" that is going to be launched by Microsoft founder and philanthropist Bill Gates in the presence of U.S. President Barack Obama. The source said France, the U.S., India, South Korea, Saudi Arabia, Australia, Canada and Norway have already decided to participate in the "ambitious" project that will aim at developing clean energies.

Two other sources, including a former U.S. White House official familiar with the initiative, said the amount of money involved, from countries, companies and individuals would be in the tens of billions of dollars. The money would be geared toward research and development of technologies, such as energy storage that could make clean power from wind and solar more usable regardless of weather vagaries.

According to an early draft of the initiative, which at the time was called "Mission Innovation," governments participating were pledging to double their clean energy research and development spending in the next five years.

—By Sylvie Corbet, Karl Ritter and Seth Borenstein

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11:55 a.m.

The 53-nation Commonwealth says climate change poses an "existential threat" to some member states, and wants the Paris climate talks to produce a legally binding agreement to reduce greenhouse gas emissions.

The Commonwealth — a grouping of Britain and many of its former colonies — covers more than 2 billion people. Its members include industrialized economies such as Canada and Australia, resource-hungry India and small island states vulnerable to rising sea levels.

At a biennial summit in Malta, Commonwealth leaders called for developed countries to spend $100 billion a year by 2020 to "help developing countries implement plans for adaptation and mitigation."

The United States has cast doubt on whether an agreement reached in Paris would be legally binding. Secretary of State John Kerry said this month that there were "not going to be legally binding reduction targets" agreed at the meeting.

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10:20 a.m.

Environmental and other activists are lining up shoes on Paris streets and holding a healing ceremony to urge world leaders to reach a deal to slow climate change.

A big activists' march Sunday was banned because of a state of emergency imposed in France after Nov. 13 extremist attacks that killed 130 people.

Instead, environmental groups are holding marches outside France this weekend, and some activists lined up shoes on the Place de la Republique square to represent the people barred from protesting.

Tribal leaders from different indigenous groups around the world are also planning a healing ceremony Sunday near the site of the Paris attacks.

They are urging leaders gathering for U.N. climate talks near Paris Nov. 30-Dec. 11 to agree to deep emissions cuts and to help poor countries cope with global warming.

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9:45 a.m.

More than 140 world leaders are gathering in Paris for high-stakes talks seeking a long-term deal to slow man-made global warming.

U.N. Secretary-General Ban Ki-moon is meeting French President Francois Hollande on Sunday morning to discuss the talks, and U.S. President Barack Obama is among scores of other leaders arriving for the talks.

The Nov. 30- Dec. 11 U.N. climate conference is under extra-high security after extremists killed 130 people around Paris earlier this month.

Negotiators from 196 countries are seeking an accord that reduces man-made emissions to limit rising sea levels and increasingly extreme weather that is already threatening populations around the world.