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Ecology

Three Cassiopea, or upside-down jellyfish, seen from above in a lab at the Smithsonian’s National Museum of Natural History. The cloudy matter floating above and to the left of the jellyfish is a mucus that they exude.

These Jellyfish Don’t Need Tentacles to Deliver a Toxic Sting

Smithsonian scientists discovered that tiny ‘mucus grenades’ are responsible for a mysterious phenomenon known as ‘stinging water’

Mexico City Is Proposing to Build One of the World’s Largest Urban Parks

More than twice the size of Manhattan, the park could restore the water systems of the region and serve as a model for cities around the world

Numbers of these charismatic, blubbery birds have decreased by about half across Antarctica's northwest.

Preliminary Census Documents Antarctica’s Chinstrap Penguins in Sharp Decline

Climate change is the likeliest culprit, researchers say

Fuzzy and fast flying, bumblebees tend to run warm, and are best adapted to cooler climes.

Climate Change Has Driven Serious Declines in World’s Bumblebees

The number of habitats in North America that bumblebees occupy has fallen by almost 50 percent

The red-breasted nuthatch eavesdrops on chickadee conversations to get advanced notice of predators like pygmy owls.

New Research

Nuthatches Heed Chickadees’ Warning Calls—but They’re Wary of False Alarms

Nuthatches prefer to check the facts before they ‘retweet’ chickadees’ alerts

The mesmerizing rainbow sheen of jewel beetles Sternocera aequisignata might help camouflage them from predators.

Glitzy Beetles Use Their Sparkle for Camouflage

A new study suggests eye-catching iridescence isn’t just for standing out in a crowd—it can conceal, too

A researcher holds a platypus for a Melbourne Water study conducted in 2017.

Australia’s Droughts and Fires Present New Dangers to the Platypus

Threats to the semi-aquatic, egg-laying mammals demand action, experts say

"Tardigrades are definitely not the almost indestructible organism,” says Ricardo Neves.

New Research

High Temperatures Might Be Water Bears’ Achilles Heel

Tardigrades are known for their resilience, but a new study shows they can’t bear hours in the heat

Adult mayflies following an emergence on Lake Erie.

Massive Mayfly Swarms Are Getting Smaller—and That’s Bad News for Aquatic Ecosystems

The drop is a sign that the insects’ populations are threatened, which could negatively affect the animals that feed on them

Coyotes are about to enter South America, a move that could soon make the species, native to North America, one of the most widespread carnivores in the western hemisphere.

Coyotes Poised to Infiltrate South America

The crab-eating fox and the coyote may soon swap territories, initiating the first American cross-continental exchange in more than three million years

Photosynthetic bacteria in the concrete make it bright green until it dries and turns brown.

New Research

Scientists Design Bacteria-Based Living Concrete

Its designers hope that it could help with construction in deserts or even on Mars

Brush-tailed rock-wallabies are endangered in New South Wales.

Australia’s National Park Staff Is Now Air-Dropping Food to Wallabies

Wallabies often survive the bushfires, but their natural food sources do not

Even for grasshoppers, being upside-down can be a high (blood) pressure situation.

Like Humans, Grasshoppers Grapple With Gravity’s Effects on Blood Pressure

After putting the insects into a linear accelerator, researchers got some surprisingly weighty results

Española tortoises are reared for five years before being released on the Galápagos' Española Island.

Diego, the 100-Year-Old Tortoise Who Fathered 900 Babies, Returns to the Wild

The breeding program brought the Española tortoise population back from the brink

After seeing their numbers slashed due to overhunting in the 20th century, North Atlantic right whales still face plenty of threats, including ship strikes, habitat degradation and pollution. A mother and her calf are seen in this aerial image from 2005.

Can Scientists Protect North Atlantic Right Whales by Counting Them From Space?

A new collaboration between the New England Aquarium and the engineering firm Draper seeks to use satellite sonar and radar data to create a global watch

Iridescent spots found on the dot-underwing moth suggest that even nocturnal insects might rely on visual cues

New Research

How These Nocturnal Moths Sparkle at Night

The nocturnal insect might flash its reflective spots at a potential mate

The bitty ant on top of the big one is a newly-described species of "rodeo ant," a queen that rides atop her perch by biting its waist.

Texan ‘Rodeo Ants’ Ride on the Backs of Bigger Ants

The strategy helps the parasitic riders steal food and childcare from their hosts

Bioluminescent "sea fireflies," a species of ostracod crustacean, covering the rocks on the coast of Okayama, Japan.

How Studying Bioluminescent Creatures Is Transforming Medical Science

The natural light of insects and sea creatures can help doctors illuminate H.I.V. and even kill cancer cells

The tooth-filled mouth of a lamprey. These bloodsucking fish have managed to survive for hundreds of millions of years.

Why the World Needs Bloodsucking Creatures

The ecological benefits of animals like leeches, ticks and vampire bats are the focus of a new exhibition at the Royal Ontario Museum

Thanks to the ubiquity of electric light, less and less of the planet falls genuinely into darkness any more.

How Cities and Lights Drive the Evolution of Life

Urbanization and the spread of artificial light are transforming all of earth’s species, bringing about a host of unintended consequences

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