Earth is soon going to exceed the safe temperature threshold, the report said.
Climate activist Greta Thunberg was temporarily banned from Venice after the Grand Canal was dyed green in an act of protest over the weekend.
Pope Leo XIV is urging countries at United Nations climate talks to take "concrete actions" to stop climate change that is threatening the planet.
Schwarzenegger, the former Republican governor of California, has devoted time to environmental causes since leaving political office in 2011.
Gov. Gavin Newsom extended a signature state program aimed at reducing planet-warming emissions through 2045, a move Democrats cheered but Republicans warned would raise gas prices.
Once largely confined to the Gulf Coast, flesh-eating bacteria cases have surged along the East Coast, with an 800% increase from 1988 to 2018, according to the CDC.