Mexico's taking control of its oil sector from U.S. and British companies is taught in schools and celebrated every year. The 1938 nationalization is a point of pride for millions of Mexicans including President Andrés Manuel López Obrador.

The popular president hails from the Mexican oil industry's heartland, and 16 years ago he led a fight against energy reforms that were aimed at drawing private investment to the massive state-run oil company, Pemex. This year, the front-runner in the race to replace López Obrador chose the anniversary of Mexico's oil expropriation to announce her energy proposals, which include maintaining large-scale petroleum production by Pemex.

Nations made progress on a treaty to end plastic pollution as their fourth round of talks finished early Tuesday in Canada.

For the first time in the process, negotiators discussed the text of what is supposed to become a global treaty. Delegates and observers at the Intergovernmental Negotiating Committee on Plastic Pollution called it a welcome sign that talk shifted from ideas to treaty language at this fourth of five scheduled meetings.

From ancient fertilizer methods in Zimbabwe to new greenhouse technology in Somalia, farmers across the heavily agriculture-reliant African continent are looking to the past and future to respond to climate change.

Africa, with the world's youngest population, faces the worst effects of a warming planet while contributing the least to the problem. Farmers are scrambling to make sure the booming population is fed.

Small towns in Oklahoma began a long cleanup Monday after tornadoes flattened homes and buildings and killed four people, including an infant, widening a destructive outbreak of severe weather across the middle of the U.S.

Punishing storms that began late Saturday in Oklahoma injured at least 100 people, damaged a rural hospital, washed out roads and knocked out power to more than 40,000 customers at one point, state officials said. Tornadoes on Friday in Iowa and Nebraska also caused wide destruction and were blamed for one death.

Southeast Asia was coping with a weekslong heat wave on Monday as record-high temperatures led to school closings in several countries and urgent health warnings throughout the region.

Millions of students in all public schools across the Philippines were ordered to stay home Monday after authorities canceled in-person classes for two days. The main advice for everyone, everywhere has been to avoid outdoor activities and drink plenty of water, but the young and the elderly were told to be especially careful.

A dam collapsed in western Kenya early Monday, killing at least 40 people after a wall of water swept through houses and cut off a major road, police said.

The Old Kijabe Dam, located in the Mai Mahiu area of the Great Rift Valley region that is prone to flash floods, collapsed and water spilled downstream, carrying with it mud, rocks and uprooted trees, police official Stephen Kirui told The Associated Press.

Coal-fired power plants would be forced to capture smokestack emissions or shut down under a rule issued by the U.S. Environmental Protection Agency.

New limits on greenhouse gas emissions from fossil fuel-fired electric plants are the Biden administration's most ambitious effort yet to roll back planet-warming pollution from the power sector, the nation's second-largest contributor to climate change. The rules are a key part of President Joe Biden's pledge to eliminate carbon pollution from the electricity sector by 2035 and economy-wide by 2050.

Flooding in Tanzania caused by weeks of heavy rain has killed 155 people and affected more than 200,000 others, the prime minister said.

That is more than double the number of deaths reported two weeks ago as the amount of rainfall increases, especially in the coastal region and the capital, Dar es Salaam.

Circumstantial evidence points to climate change as worsening the deadly deluge that just flooded Dubai and other parts of the Persian Gulf, but scientists didn't discover the definitive fingerprints of greenhouse gas-triggered warming they have seen in other extreme weather events, a new report found.

Between 10% and 40% more rain fell in just one day last week — killing at least two dozen people in the United Arab Emirates, Oman and parts of Saudi Arabia — than it would have in a world without the 1.2 degrees Celsius (2.2 degrees Fahrenheit) warming that has come from the burning of coal, oil and natural gas since the mid-19th century, scientists at World Weather Attribution said Thursday in a flash study that is too new to be peer-reviewed.

Just like the animals on Noah's Ark, the corals arrived in a pair.

On Monday, divers with gloved hands gently nestled the self-bred corals from the World Coral Conservatory project among their cousins in Europe's largest coral reef at the Burgers' Zoo in the Netherlands.