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Orca tail dolphins to hunt salmon—and may share the catch

Killer whales or orca (Orcinus orca) have been observed hunting with Pacific white-sided dolphins (Lagenorhynchus obliquidens) in the waters off British Columbia, Canada, and sharing fish scraps with them after making a kill, ...

Rooster 'epidemic' fueled by backyard coops, sanctuaries say

A yearslong surge in displaced roosters is overwhelming animal sanctuaries in Maryland and across the country, fueled by a pandemic-born boom in backyard chicken coops and the noisy realities of owning a male bird.

Cats' purrs reveal who's who better than their meows

A new study by researchers from the Museum für Naturkunde Berlin and the University of Naples Federico II shows a domestic cat's purr reveals far more about its individual identity than its meow. While meows are highly flexible ...

Honeybees crowd out bumblebees—even on flower-rich heathlands

When the late summer sun falls over Ireland's Wicklow Mountains, the slopes turn purple with blooming heather. Honeybees are moved to the heathlands for the sought-after heather honey, but their presence affects wild bumblebees.

Novel kirkovirus may be associated with colitis in horses

In a pilot study, researchers from North Carolina State University have found a novel kirkovirus that may be associated with colitis—and potentially small colon impactions—in horses. The study could offer a route to new ...

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Plants & Animals
Adult female bark spiders produce superior and tougher silk than males do
Plants & Animals
The American West's most iconic tree is disappearing
Plants & Animals
The surprising culprit limiting the abundance of Earth's largest land animals
Plants & Animals
World's rarest marsupial: What new research reveals about its survival needs
Plants & Animals
Male bonobos track females' reproductive cycle to maximize mating success
Plants & Animals
Connections between coral reefs boost their health
Plants & Animals
Female Galápagos seabirds have flings—and males seem OK with it
Plants & Animals
Health monitoring patch offers gentle way to conserve frog populations
Plants & Animals
Elusive species face the greatest threat from human land use, global analysis finds
Plants & Animals
The Methuselah worm: The oldest university in the U.S. is home to the world's oldest ribbon worm
Plants & Animals
Nearly 8,000 animal species are at risk as extreme heat and land-use change collide
Plants & Animals
Effort to save Asia's big cats from catastrophe
Plants & Animals
Protecting orchids found nowhere else on Earth
Plants & Animals
What do stingrays actually eat? New study reveals some only prefer a single type of prawn
Plants & Animals
How eating oysters could help restore South Australia's algal-bloom-ravaged coast
Plants & Animals
'It was a matter of time': Illness affecting bats may have arrived in Las Vegas
Plants & Animals
Axolotls regenerate functional thymus after complete removal
Plants & Animals
Estimating the number of flying insects in the US using weather radar
Plants & Animals
An ancient genetic switch that lets plants grow, adapt and survive
Plants & Animals
Review offers new ideas for improving photosynthesis in agricultural environments

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Space Exploration
Earth's atmosphere may help support human life on the moon
Condensed Matter
Chip-scale magnetometer uses light for high-precision magnetic sensing
Biotechnology
Lab-developed mosquitoes prevent malaria parasite development, paving way for future field trials
Bio & Medicine
A biochip built for the next pandemic can test dozens of viral antigens at once
Evolution
Warblers borrow color-related genes from evolutionary neighbors, study finds
Evolution
Infrared radiation may be one of the most ancient plant signals to pollinating insects
Nanomaterials
Exposing a single active site in nanoclusters boosts catalytic activity for green energy
Optics & Photonics
All-optical modulation in silicon achieved via an electron avalanche process
Nanomaterials
Graphene membranes offer efficient, low-cost option for industrial CO₂ capture
Astronomy
Astronomers create first map of the sun's outer boundary
Cell & Microbiology
Shape-shifting cell channel reveals new target for precision drugs
Earth Sciences
Hidden fuel for ocean microbes: Urea emerges as key energy source for marine ammonia oxidizers
Astronomy
Small galaxies may buck the black hole trend, Chandra finds
Earth Sciences
Widespread sediments beneath Greenland make its ice more vulnerable to warming
Earth Sciences
Wintertime spike in oceanic iron levels detected near Hawaii
Archaeology
Ear piercings marked one of the earliest Maya rites of passage, research shows
Astronomy
Astronomers examine nuclear star cluster of nearby galaxy Messier 74
Astronomy
Rare image of Tatooine-like planet is closest to its twin stars yet
Biotechnology
Scientists teach helices to switch shapes
Social Sciences
Popular song lyrics have become more negative since 1973, analysis reveals

The American West's most iconic tree is disappearing

A profound unraveling is underway in the American Southwest, happening across a thousand-mile arc from Santa Fe, New Mexico, to the central Sierra. In an unprecedented calamity, the most widely distributed, most iconic tree ...