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Biology

Participants listened to pairs of mating calls made by numerous creatures, including male green treefrogs.

Humans and Animals Often Like the Same Mating Calls, Supporting a 150-Year-Old Observation by Charles Darwin

New research by Smithsonian scientists suggests that preferences for certain sounds might be evolutionarily conserved

European hedgehog numbers are shrinking.

European Hedgehogs’ Hearing Might Be Attuned to Ultrasonic Sounds. The Discovery Could Help Scientists Save the Declining Species

Sound-based deterrents could help keep the animals away from fast-moving cars and dangerous landscaping equipment

An artist’s illustration of the exoplanet HD 219134 b, a rocky world about 21 light-years from Earth. This scorching planet, which orbits extremely close to its host star, might have a partially molten surface and volcanoes.

Alien Life Could Look Nothing Like What We Expect. Here’s How Microbes Beyond Earth Might Live Without Liquid Water

Like the lead character of “Project Hail Mary,” some scientists are proposing ways that life might exist beyond a star’s “habitable zone,” often considered the gold standard of potential livability

Researchers spent six years observing interactions between bull sharks at Fiji's Shark Reef Marine Reserve.

Bull Sharks Are Large, Aggressive Predators—but They Also Know How to Make ‘Friends,’ New Research Suggests

The animals probably socialize to learn new skills and to find food and mates

Like Astrophage, the solar-radiation-eating microbes in Andy Weir’s novel Project Hail Mary, some sea slugs can derive energy from sunlight.

These Sea Slugs Can ‘Eat’ Sunlight—but They’re No Astrophage. Here’s How the ‘Project Hail Mary’ Antagonist Has a Real-Life Analogue in Earth’s Oceans

By snatching chloroplasts from algae, animals called sacoglossans produce their own energy through photosynthesis

Male African striped mice's parenting styles vary greatly: Some fathers groom and protect their pups from the elements, while others ignore or even attack their young.

Some Mice Are Doting Dads, While Others Ignore or Attack Their Offspring. Researchers Just Figured Out Why

In African striped mice, the activity of one gene can dramatically change a male’s parenting style, according to a new study

Scientists tracked the breeding behaviors of king penguins on Possession Island, part of the French-controlled Crozet archipelago.

King Penguins Seem to Be Benefiting From a Warming World. While That’s Good News for Now, It Could Spell Trouble for the Future

The birds are breeding earlier, and more of their chicks are surviving. But researchers fear this success may not last

Even common backyard birds like house finches are disappearing.

North American Bird Losses Are Accelerating. New Research Suggests Fertilizers and Pesticides May Be to Blame

Scientists found the severest changes in decline rates in places that include hallmarks of high-intensity agriculture

Some researchers think that two varieties of orcas are so different that they should be considered separate species. 

Do These Severed Orca Fins Covered in Tooth Marks Mean Killer Whales Are Cannibals? It’s Complicated, Scientists Say

Researchers suggest that predation by a subspecies called Bigg’s orcas might explain why members of another one, called resident orcas, stay in such large family groups

Common eastern bumblebee queens use underwater breathing and anaerobic metabolism to survive when submerged.

Bumblebee Queens Breathe Underwater to Survive Drowning, Revealing How They Can Live Submerged for a Week

After scientists accidentally discovered that the common eastern bumblebee can withstand flood conditions, they wanted to investigate what makes that super-ability possible

Lead author Matt von Konrat studying moss found with reburied human remains.

How a Tiny Clump of Moss Helped the FBI Solve a Grave-Robbing Case

Cemetery workers argued that the crimes happened before their employment. But a buried bit of moss told a different story

Researchers dubbed one experiment involving a roughly one-foot-tall crystal "The Monolith" in honor of Stanley Kubrick's iconic film 2001: A Space Odyssey.

Chimps Seem to Love Crystals. Their Attraction Might Help Explain Humans’ Obsession With the Shimmering Stones

Hominins have been collecting calcite and quartz for at least 780,000 years. A new study hints at why

Mature adults have just one verticle stripe behind their eyes.

These Clownfish Lose Their Baby Stripes in Response to Peer Pressure, New Research Suggests

Tomato clownfish perform a dramatic underwater wardrobe change based on the social dynamics of their environment

The annual "catastrophic" molt of the emperor penguin makes the birds especially vulnerable to climate change.

Emperor Penguins’ Annual Molt Might Put Them in Peril. The Sea Ice They Rely on During This Vulnerable Period Is Disappearing

The birds’ already risky molting strategy—in which they shed and regrow all their feathers at once—is becoming even more hazardous due to climate change

Researchers collected chimp urine from leaves and puddles on the forest floor in Uganda.

Wild Chimpanzees Love to Eat Boozy Fruit. Scientists Say the Proof Is in Their Pee

The work further hints that humans may have inherited our penchant for alcohol from our ape ancestors

Female caribou grow antlers, which they shed just a few days before giving birth.

Caribou Are the Only Deer Species in Which Females Grow Antlers. Scientists Just Figured Out Why

New research suggests female reindeer antlers serve as postpartum snacks, with new moms munching on them after giving birth to get a much-needed boost of protein, calcium and phosphorus

New research suggests horses are singing and whistling at the same time when they whinny.

How Do Horses Whinny? Scientists Say They’ve Figured Out How the Majestic Animals Make This Distinctive Sound

An equine makes the low-pitched part of its whinny by vibrating its vocal cords—similar to how humans speak and sing—and the high-pitched part by whistling

The study focused on Kanzi, a language-trained bonobo who died in March 2025 at the age of 44.

Can Apes Play Pretend? What Scientists Learned From Having Imaginary ‘Tea Parties’ With Kanzi the Bonobo

A new study provides evidence for imagination in a captive-raised, English language-trained animal

Japanese chin dogs had some of the highest rates of brachycephalic obstructive airway syndrome in the study. 

These 12 Popular Dog Breeds Are at Risk of Breathing Problems Related to Their Short Snouts, a New Study Suggests

Past research on brachycephalic obstructive airway syndrome—a chronic, hereditary disease associated with flat faces—has focused mainly on just three breeds

Researchers are developing A.I.-based facial recognition tools to identify individual bears.

How Do Researchers Identify Individual Bears in the Wild? They Could Soon Do It Through A.I. Facial Recognition Technology

Such tools could help scientists track population sizes or recognize aggressive animals that have attacked humans

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