Up First briefing: U.N. and climate change; UAW strike Day 4; Barrymore pauses show

U.N. Secretary-General António Guterres will host a new event, the Climate Ambition Summit , this week .

Thousands of activists, indigenous groups, students and others take to the streets of New York for the March to End Fossil Fuels protest.

The auto workers' strike enters its fourth day today .

The state of California filed a lawsuit against oil giants including Exxon Mobil , Shell and BP .

A new image captured by the James Webb telescope shows the newborn star Herbig-Haro 211 , which will eventually grow into a star like our sun.

A joint investigation by British media The Times , The Sunday Times and Channel 4 accuses Russell Brand of sexual assault, rape and emotional abuse.

Jann Wenner , the founder of Rolling Stone magazine, has apologized and was removed from the Rock & Roll Hall of Fame Foundation board.