In a landmark U.N. study, researchers found nearly half of the world's threatened migratory species have declining populations. More than a fifth of the assessed animals face extinction.
At least, that's what a group of researchers at the Okinawa Institute of Science and Technology Graduate University thinks. The team recently published a study in the journal Experimental Biology suggesting that Amphiphrion ocellaris, or clown anemonefish, may be counting. Specifically, the authors think the fish may be looking at the number of vertical white stripes on each other as well as other anemonefish as a way to identify their own species. Not only that — the researchers think that the fish are noticing the minutiae of other anemonefish's looks because of some fishy marine geopolitics.
Questions, comments or thoughts on another marine sea creature you want to hear us cover? Email us at shortwave@npr.org and we might feature it on a future episode!
California sea otter populations have rebounded in recent decades. New research finds that by feasting on shore crabs, these otters are helping to protect their coastal marsh habitat against erosion.
In 1986 the Chernobyl nuclear power plant exploded, releasing radioactive material into northern Ukraine and Belarus. It was the most serious nuclear accident in history. Over one hundred thousand people were evacuated from the surrounding area. But local gray wolves never left — and their population has grown over the years. It's seven times denser than populations in protected lands elsewhere in Belarus. This fact has led scientists to wonder whether the wolves are genetically either resistant or resilient to cancer — or if the wolves are simply thriving because humans aren't interfering with them.
This episode, researchers Shane Campbell-Staton and Cara Love talk through what might be causing this population boom. Plus, why researchers in the field of human cancer are eager to collaborate with them.
Want to hear about other ways humans are impacting the planet? Email us at shortwave@npr.org.
Spiderwebs can capture environmental DNA, or eDNA, from vertebrate animals in their area, potentially making them a useful tool in animal monitoring, tracking and conservation.
Scientists have found that spiderwebs can be used to capture environmental DNA, which reflects the animal population of an area. The technique may help track the biodiversity of an ecosystem.
Those insects you see flying in crazed circles are trying to keep their backs towards the light because they think that direction is up, new research suggests.
How long does immunity last after an infection? Are rapid tests always accurate? How often is a booster in order? In this installment of our FAQ series, we look into questions about "COVID time."
Scientists looked at trees to better understand the interplay between temperatures and droughts in the Western U.S. Human-caused climate change is exacerbating both.
The ancient extinct shark that starred in the film The Meg is thought to be the largest shark that ever swam the Earth. But there's debate over what it really looked like.
A new study of kelp fossils from the coast of Washington state show that kelp forests, which host all manner of marine life, developed tens of millions of years ago.
The megalodon went extinct 3.6 million years ago, and is thought to be the largest shark that ever swam the Earth. But the megalodon may not have been as big as once thought, some researchers suggest.
Data from the James Webb Space Telescope indicate that a galaxy known as GN-z11 has a supermassive black hole at its center — one that's far more massive than astronomers expected.
Researchers say they've identified the oldest known Tyrannosaurus, shaking up the ongoing debate over how and when the dinosaurs arrived in North America.
Are we in a surge? How would we know? Is winter now "COVID season?" And what do you do if your whole family got the coronavirus over the holidays? We tackle readers' coronavirus questions.
