Science

With cases of the delta variant of coronavirus rising across the country and children under 12 still needing to be approved for the vaccine, returning to school in September can feel unsafe at best and worrying at worst.How will this new…

More than 17,000 years ago, a woolly mammoth now known as the Kik wandered far and wide across Alaska during its 28-year life.When Kik was young, he spent most of his time inland Alaska, a less mountainous area. Then, when he turned 15,…

For the foreseeable future, most hydrogen fuel will very likely be made from natural gas through an energy-intensive and polluting method called the steam reforming process, which uses steam, high heat and pressure to break down the methane…

The largest tournament competitions in the world take place on certain rotting trees in the New Zealand bush, where hordes of males battle for opportunities to mate. The knights are not humans, but New Zealand giraffe weevils, a species of…

On Friday, a cold front will likely force some of the smoke out of the Rockies and provide a window with a clear view. But with big fires still burning on the west coast, forecasters say clarity may not last long.For many visitors to the…

WASHINGTON - After denying the existence of climate change for a decade, many leading Republicans are changing attitudes amid deadly heatwaves, devastating droughts and wildfires that have battered their districts and unnerved their…

The same team of Harvard researchers also published the first study to find a clear connection between long-term exposure to air pollution and Covid-19 death rates last year.The new study included reported infections, not just deaths, which…

Boeing’s Starliner spacecraft has been recalled to the factory because of sticky valves.The Starliner is designed to take NASA astronauts to and from the International Space Station, and was already years behind schedule. Earlier problems…

Everyone knows the conventional wisdom about metabolism: people gain weight year after year from the age of 20 because their metabolism slows down, especially in middle age. Women have a slower metabolism than men. This makes it harder…

Hospital doctors in Iran examine patients on emergency room floors and in cars parked on the side of the road. Lines extend for blocks outside pharmacies. Taxis also serve as hearses, transporting bodies from hospitals to cemeteries.…