Six Native American tribes sued Wisconsin on Tuesday to try to stop its planned gray wolf hunt in November, asserting that the hunt violates their treaty rights and endangers an animal they consider sacred.

The Chippewa tribes say treaties give them rights to half of the wolf quota in territory they ceded to the United States in the mid-1800s. But rather than hunt wolves, the tribes want to protect them.

The two biggest economies and largest carbon polluters in the world announced separate financial attacks on climate change Tuesday.

Chinese President Xi Jinping said his country will no longer fund coal-fired power plants abroad, surprising the world on climate for the second straight year at the U.N. General Assembly. That came hours after U.S. President Joe Biden announced a plan to double financial aid to poorer nations to $11.4 billion by 2024 so those countries could switch to cleaner energy and cope with global warming's worsening impacts. That puts rich nations close to within reach of its long-promised but not realized goal of $100 billion a year in climate help for developing nations.

A small Spanish island in the Atlantic Ocean is struggling days after a volcano erupted, forcing the evacuation of thousands of people, and authorities are warning that more dangers from the explosion lie ahead.

Here is a look at the volcanic eruption on La Palma and its consequences:

Racism, the climate crisis and the world's worsening divisions will take center stage at the United Nations on Wednesday, a day after the U.N. chief issued a grim warning that "we are on the edge of an abyss."

For the first time since the COVID-19 pandemic began, more than two dozen world leaders appeared in person at the U.N. General Assembly on the opening day of their annual high-level meeting. The atmosphere was somber, angry and dire.

McDonald's plans to "drastically" reduce the plastic in its Happy Meal toys worldwide by 2025.

The burger giant said Tuesday it's working with toy companies to develop new ideas, such as three-dimensional cardboard superheroes kids can build or board games with plant-based or recycled game pieces. McDonald's said it's also exploring using recycled plastic toys to make new restaurant trays.

Several small earthquakes shook the Spanish island of La Palma off northwest Africa in the early hours of Tuesday, keeping nerves on edge as rivers of lava continued to flow toward the sea and a new vent blew open on the mountainside.

The new vent is 900 meters (3,000 feet) north of the Cumbre Vieja ridge, where the volcano first erupted on Sunday after a week of thousands of small earthquakes.

Four famous giant sequoias were not harmed by a wildfire that reached the edge of Giant Forest in California's Sequoia National Park, authorities said.

The Four Guardsmen, a group of trees that form a natural entryway on the road to the forest, were successfully protected from the KNP Complex fire by the removal of nearby vegetation and by wrapping fire-resistant material around the bases of the trees, the firefighting management team said in a statement Sunday.

Opening pocketbooks wider to fight climate change? That's looking slightly more doable. Closing more smokestacks for the same goal? Not yet sold.

World leaders made "faint signs of progress" on the financial end of fighting climate change in a special United Nations feet-to-the-fire meeting Monday, but they didn't commit to more crucial cuts in emissions of the heat-trapping gases that cause global warming. So after two high-level meetings in four days, frustrated leaders are still pointing to tomorrow — or next month — for key climate-change fighting promises.

A volcano on Spain's Atlantic Ocean island of La Palma erupted Sunday after a weeklong buildup of seismic activity, prompting authorities to evacuate thousands as lava flows destroyed isolated houses and threatened to reach the coast. New eruptions continued into the night.

The Canary Islands Volcanology Institute reported the initial eruption shortly after 3 p.m. near the southern end of the island, which saw its last eruption in 1971. Huge red plumes topped with black-and-white smoke shot out along the Cumbre Vieja volcanic ridge, which scientists had been closely watching following the accumulation of molten lava below the surface and days of small earthquakes.

Pressure keeps building on increasingly anxious world leaders to ratchet up efforts to fight climate change. There's more of it coming this week in one of the highest-profile forums of all — the United Nations.

For the second time in four days, this time out of U.N. headquarters in New York, leaders will hear pleas to make deeper cuts of emissions of heat-trapping gases and give poorer countries more money to develop cleaner energy and adapt to the worsening impacts of climate change.