This story was updated to add new information. A new flu variant is sweeping across the United States, causing millions of reported cases and doubling the number of hospitalizations in a surge doctors ...

For some locations around the world, residents are already celebrating the start of 2026. Just like there are time zones across the United States, there are time zones around the world to reflect the ...

For 13 years, researchers tracked where fossil fuels were burned across the United States, block by block, revealing exactly where carbon pollution enters the air. Detailed carbon maps are essential, ...