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.

Nothing to eat, nothing to plant. The last rain in Ifotaka fell in May, for two hours.

Prince William announced 15 inaugural finalists Friday for the Earthshot Prize, his ambitious global environmental award that aims to find new ideas and technologies to tackle climate change, air pollution and the Earth's most pressing challenges.

The finalists include a 14-year-old student who proposes using solar energy to replace charcoal to power millions of roadside ironing carts in India; a land-based coral farm in the Bahamas to restore dying coral reefs; a community project in Congo devoted to protecting gorillas; and a Kenyan enterprise that turns organic waste into fertilizer and insect protein for farmers.

When a wildfire crested the mountains near North America's largest alpine lake, embers and ash that zipped across a smoky sky pierced Lake Tahoe's clear blue waters.

The evacuation order for thousands to flee their homes has been lifted, but those who returned have found black stripes of ash building up on the shoreline — a reminder that success fighting the Caldor Fire won't insulate the resort region on the California-Nevada line from effects that outlast wildfire season.