As the federal public health emergency is set to expire on May 11, here’s what you need to know about future COVID testing, treatment and vaccines

The first asteroid belt ever found outside the solar system is more complex than expected

Bird-strike-deterrent window films don’t work if they’re placed on the indoor side

Yes, peanut butter is a liquid (and a great example of a non-Newtonian fluid)

Delays and budgetary overruns are causing many to worry that NASA’s ambitious planetary science program is at a breaking point

A wireless device worn on the face or lip can produce fragrances such as lavender and green tea in a virtual world

Recent rulings on the abortion pill cite the Comstock Act, a 150-year-old law that’s still on the books

Paleontologists have uncovered a miniature world of sea creatures whose tiny guts, eyes and even brains remain visible 462 million years after they perished

Flavor is a tricky target, but technology and powerful genetic techniques are making it more feasible to improve the taste of vegetables

A combination of climate change and unsustainable agricultural practices could lead to Dust Bowl–like conditions

Commercially valuable Dungeness crabs lose their sense of smell as the ocean absorbs more carbon dioxide and becomes more acidic

Exotic particles called nonabelions could fix quantum computers’ error problem

Hints of water vapor on a world called GJ 486 b could just as well come from the planet’s host star

Tornado outbreaks are moving from Texas and Oklahoma toward Tennessee and Kentucky, where people may not be prepared

Hints of life on distant worlds will come from signals pioneered by NASA’s jumbo space telescope

The EPA has announced new draft rules that would require power plants that burn fossil fuels to capture 90 percent of their climate-warming emissions

Researchers are still struggling to understand how AI models trained to parrot Internet text can perform advanced tasks such as running code, playing games and trying to break up a marriage

Scalloped hammerhead sharks take dramatic dives to hunt for food in cold, deep waters—and new evidence suggests they hold their breath to keep warm while they do so

A new way to gauge the universe’s expansion rate has delivered a confusing result that may conflict with previous related measurements

An mRNA vaccine prevented tumor recurrence after surgery in eight of 16 patients, but the therapy still needs to be validated in larger trials