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A bus being treated with ultraviolet light in Shanghai, China. Although types of UV light are already in use to decontaminate vehicles and indoor spaces, the wavelengths used are dangerous to people. Researchers hope that wavelengths of far-UVC light can be used harmlessly when people are present.

Covid-19

Could UV Light Reduce the Spread of Covid-19 in Indoor Spaces?

Some wavelengths of light in a range called far-UVC kill microbes in experiments and appear to be harmless to people

Five-day-old red-eyed treefrog embryos are tightly curled inside dehydrated eggs packed closely together. It’s dry enough to make them begin to hatch early amid heating.

Panama

When the Heat is On, Red-Eyed Treefrogs Hatch Early

The embryos make the move from clutches on leaves to rainforest ponds below

An artist’s reconstruction of Qianodus duplicis, the earliest known fish that had a mouth with teeth

Haul of Fossil Fish Pushes Back the Origin of Teeth and Jaws

The unexpected finds illustrate life during a critical and little-understood time period

A European eel swims in the Baltic Sea. 

The Utterly Engrossing Search for the Origin of Eels

To save the endangered animals, researchers have been working for decades to figure out where they reproduce

Just as songs repeat in choruses, formations in space take understandable shapes. Pictured here are the large Cartwheel galaxy and two smaller companion galaxies.

What Pop Stars and Actual Stars Have in Common

A songwriter and an astrophysicist discuss the art and science of repetition

The current drought reveals lost items from earlier, wetter times, like this sunken boat near Iceberg Canyon.

The Breathtaking Glen Canyon Reveals Its Secrets

Water woes threaten America’s second largest reservoir—but leave new vistas in their wake

A bull walks in front of a cow. If they mate, the bull’s sperm will likely cluster together as they swim through the female’s reproductive organs.

Bull Sperm Get by With a Little Help From Their Friends

Traveling together helps the sperm navigate a tricky, sticky migration through a cow's reproductive tract

A sculpture by artist Arlene Love and a tray of bottled scents in Joel Mainland’s office at the Monell Chemical Senses Center in Philadelphia.

Sniffing Out the Science of Smelling

From the lab to the art gallery, the latest efforts to understand the fragrant, musky, stinky and utterly baffling world of your nose

One reader wonders: Why did ants make it all over the Americas while anteaters didn’t?

 

Why Do Anteaters Live Only in the Tropics and More Questions From Our Readers

You've got questions. We've got experts.

An experimental vineyard at Cornell AgriTech’s McCarthy Farm in Geneva, New York, where researchers are studying hybrid grapes

Are Hybrid Grapes the Future of Wine?

Scientists, growers and winemakers are working with experimental varieties to adapt to the effects of climate change

After the manta ray filters out the tiny plankton from the water it ingests, the excess water exits through the dark gill slits on the ray's ventral side. 

Planet Positive

Why Conservationists Are Hopeful About the Manta Ray's Future

The giant fish faces threats from poachers, boat strikes and climate change

About two to three million birds of prey fly through Panama each fall, in what amounts to the world’s third-largest raptor migration.

Panama

Watch Millions of Raptors Fly Across Panama This Fall

The country’s unique shape makes it a perfect migratory pathway for the birds of prey

A pharmacist prepares to administer a Covid-19 booster shot to help protect a patient against the Omicron subvariants BA.4 and BA.5.

Four Big Questions About the New Covid-19 Boosters, Answered

The FDA and CDC recently recommended new boosters to target the Omicron subvariants. Here’s what you need to know about them.

The da Vinci surgical robot, shown here on a US Navy hospital ship, is one of the most widely used devices to assist doctors in laparoscopic surgery. The procedure — in which tools are inserted through tiny holes in the abdomen instead of cutting a long incision — allows patients to recover more quickly.

The Past, Present and Future of Robotic Surgery

After decades of merely assisting doctors, are sophisticated machines ready to take charge?

The newly discovered Opisthiamimus gregori preys on a now-extinct water bug.

Scientists Discover Bug-Eating Reptile That Lived Among Dinosaurs

Delicate fossil reveals a cousin of the modern tuatara

Along the Vietnamese coast, temples constructed in reverence to whales and other marine mammals—such as this one in Phan Thiet—house valuable information on the country’s little-studied cetaceans.

Inside Vietnam's Whale Temples

Centuries-old whale worship shrines are shedding light on the diversity and distribution of marine mammals off the country's coast

Spectators watch from Canaveral National Seashore as a SpaceX Falcon 9 rocket carrying 60 Starlink satellites launches.

How Is Starlink Changing Connectivity?

Elon Musk's venture has provided internet access for forces in the Ukraine and Hoh students in Washington, and the organization has a lot more planned

A Haast's eagle hunts moa.

How a Giant Eagle Once Came to Dominate New Zealand

Before the formidable bird went extinct, scientists say it likely hunted the flightless moa

Migrating waterbirds over South Dakota’s Huron Wetland Management District on North America’s Central Flyway.

Scientists Are Using These High-Tech Tools to Study Bird Migration

Tracking the journeys of different species is key to protecting them from habitat loss and other threats

Aerial view of the usually submerged ruins of the village of Aceredo in northwestern Spain on February 15, 2022

This Summer’s Drought Is Europe's Worst in 500 Years. What Happened Last Time?

The 1540 megadrought brought mass suffering to the continent, but European society quickly bounced back