The U.N. health agency says nearly everybody in the world breathes air that doesn't meet its standards for air quality, calling for more action to reduce fossil-fuel use, which generates pollutants that cause respiratory and blood-flow problems and lead to millions of preventable deaths each year.

The World Health Organization, about six months after tightening its guidelines on air quality, on Monday issued an update to its database on air quality that draws on information from a growing number of cities, towns, and villages across the globe — now totaling over 6,000 municipalities.

Many species of birds are nesting and laying eggs nearly a month earlier than they did 100 years ago in the Chicago area and researchers believe climate change is behind it.

Those were among the findings in a new study published in the Journal of Animal Ecology. Researchers compared recent observations with century-old eggs preserved in museum collections.

For hundreds of years, raging blast furnaces — fed with coking coal — have forged steel used in cars, railways, bridges and skyscrapers.

But the puffs of coal-fired smoke are a big source of carbon dioxide, the heat-trapping gas that's driving climate change.

French vintners are lighting candles to thaw their grapevines to save them from a late frost following a winter warm spell, a temperature swing that is threatening fruit crops in multiple countries.

Ice-coated vines stretched across hillsides around Chablis as the Burgundy region woke Monday to temperatures of minus 5 C (23 F). Fruit growers are worried that the frost will kill off large numbers of early buds, which appeared in March as temperatures rose above 20 C (68 F), and disrupt the whole growing season.

A report by the World Wildlife Fund shows illegal purchases of wildlife online are growing in Myanmar in a threat both to public health and to endangered species.

The report issued Friday found that enforcement of bans on such transactions has weakened amid political turmoil following a 2021 military takeover.

Mexican and American officials have met amid disagreements about an electrical power reform that seeks to limit foreign-built renewable energy plants and grant a majority market share to Mexico's state-owned power utility.

President Andrés Manuel López Obrador met with U.S. Climate Envoy John Kerry, but the Mexican leader appeared unwilling to budge on the proposal, which is currently stuck in Mexico's Congress.

The head of the United Nations has announced the appointment of an expert panel led by Canada's former environment minister to scrutinize whether companies' efforts to curb climate change are credible or mere " greenwashing."

Recent years have seen an explosion of pledges by businesses — including oil companies — to reduce their greenhouse gas emissions to "net zero" amid consumer expectations that corporations bear part of the burden of cutting pollution. But environmental campaigners say many such plans are at best unclear, at worst designed to make companies look good when they are actually fueling global warming.

Climate activist Greta Thunberg has compiled a handbook for tackling the world's interconnected environmental crises, with contributions from leading scientists and writers.

Penguin Random House has announced that "The Climate Book" will be published in Britain in October.

Severe storms that included at least two confirmed tornadoes have injured several people, damaged homes and businesses and downed power lines in Mississippi and Tennessee after they spread damage in Arkansas, Missouri and Texas overnight before moving to the Deep South.

No deaths had been reported from the storms as of Wednesday evening, officials said.

The rare one-horned rhinos that roam Kaziranga National Park in northeastern India have been increasing in numbers, thanks to stronger police efforts against poaching and artificial mud platforms that keep the animals safe from floods.

Those successful conservation efforts helped raise the park's rhino population by 200 in the past four years, census figures released by park authorities this week showed.