Male common fruit fly (Drosophila Melanogaster) - about 2 mm long - sitting on a blade of grass with green foliage background
The Sex Appeal of Symmetric Songs
Mary Bates | Aug 1, 2022
Female fruit flies assess the physical symmetry of male suitors through the songs they sing, a study claims.
A dolphin comes out of the water to catch a red ball.<br><br>
Dolphins May Remember Personal Experiences
Alejandra Manjarrez | Jul 29, 2022
Bottlenose dolphins can recall trivial details of a prior event to later solve a novel task, a study finds, suggesting these mammals are capable of episodic memory.
A small brown crustacean with white spots on it moving on a red branch.
Seaweed Has Its Own Matchmakers: Small Crustaceans
Alejandra Manjarrez | Jul 28, 2022
A species that transports the spermatia of red algae is the first known instance of an animal facilitating fertilization in this ancient photosynthetic lineage.
Close-up of baby olive ridley sea turtle (Lepidochelys olivacea)
Moving Sea Turtle Eggs May Affect Hatchling Development
Margaret Osborne | Jul 28, 2022

Hatchlings from eggs incubated in a natural nest were larger, exhibited faster neuronal development, and performed better on a motor activity test than those from eggs that were incubated in a hatchery, a study finds.

Shark at the surface of the water next to a boat
Science Snapshot: An Arctic Shark’s Tropical Vacation
Lisa Winter | Jul 26, 2022
Though Greenland sharks generally live in icy waters, one was recently caught in the Caribbean.
A whale's upper body landing on a fishing boat
Why Did This Whale Smack Into a Boat?
Amanda Heidt | Jul 26, 2022
Collisions with small craft are rare, but there are conditions that can make these encounters more likely.
A desert locust (Schistocerca gregaria) on sand
Genome Spotlight: Desert Locust (Schistocerca gregaria)
Christie Wilcox | Jul 21, 2022
A chromosome-scale genome sequence for this infamous agricultural pest could help mitigate its plagues.
Artist’s rendering of an early mammal called a mammaliamorph
Warm-Bloodedness in Mammals May Have Arisen in Late Triassic
Andy Carstens | Jul 21, 2022
Researchers mapped ear canal shape to body temperature to predict when ancestors of mammals first became endothermic.
four polar bears on floating sea ice
It’s a Bear-Eat-Bear World: Understanding Cannibalism in the Largest Land Carnivores
Raegan Scharfetter | Jul 20, 2022
A new review seeks to understand why the animals sometimes devour members of their own species.
Ad&eacute;lie penguin family
Penguins Are Among the World’s Slowest-Evolving Birds: Study
Catherine Offord | Jul 19, 2022
The findings mean that penguins may struggle to adapt under rapid climate change, researchers say.
Dinosaur Fossil (Tyrannosaurus Rex) Found by Archaeologists
Are We in the Midst of a Sixth Mass Extinction?
Katarina Zimmer | Jul 18, 2022
Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.
Illustration of creatures from today&rsquo;s crisis
Infographic: A Look at the Big Five Mass Extinctions
Katarina Zimmer | Jul 18, 2022
Extinction is a natural part of life on Earth. But occasionally, extinction rates have surged far beyond usual levels, driving mass extinction events that have reshaped the trajectory of life.
southeaster pocket gopher's head emerging from tunnel
Are Pocket Gophers Underground Farmers?
Andy Carstens | Jul 11, 2022
A study finds that roots grow deeper than typical into southeastern pocket gophers tunnel networks, raising the possibility that the rodents cultivate their food.
A yellow-orange, translucent artist&#39;s rendition of a yunnanozoan, an ancient wormlike fish, that highlights the arches that make up its cartilage skeleton.
This Simple Fish May Have Been One of the First Vertebrates
Dan Robitzski | Jul 7, 2022
A fossil analysis suggests that the yunnanozoan, a wormlike fish that flourished around 520 million years ago, sported structures that were the precursors of the head and jaws of modern vertebrates.
Vicu&ntilde;as <em>(Lama vicugna)</em> run across the plains in San Guillermo National Park, Argentina.
How Mange Remade an Ecosystem
Shawna Williams | Jul 5, 2022
A study traces the effects of a mite outbreak from the earth to the heavens.
Pufferfish underwater in ocean
Pufferfish Don’t Need Functional Stomach, Inflate Instead
Natalia Mesa | Jul 5, 2022
The fish use their stomach to swell up to three times their size. Is this why they can’t use the organ to digest proteins?
An orange-brown pineapple sea cucumber, covered in wart-like growths, rests on the seafloor in front of some coral, with a school of fish swimming overhead.
How the Sea Cucumber Defends Itself . . . From Itself
Natalia Mesa | Jul 1, 2022
The marine animals have evolved a unique molecular pathway enabling them to use toxins to fight off invaders without poisoning themselves in the process.
Green fruit hanging in a tree
Trees’ Scent Tricks Hornets Into Shuttling Seeds
Natalia Mesa | Jun 30, 2022
Agarwood fruit smells like prey, luring carnivorous hornets, a study suggests.
Close-up of the head of the Aldabra Giant Tortoise. Her face is dirty from eating grass on a sandy beach.
How Slow Can You Go?
Hannah Thomasy | Jun 23, 2022
Two studies show negligible rates of aging in some types of turtles and other cold-blooded creatures, but that doesn’t mean they’re immortal.
a black abalone on a rock
Genome Spotlight: Black Abalone (Haliotis cracherodii)
Christie Wilcox | Jun 23, 2022
The researchers who constructed the first reference genome for this critically endangered mollusk say it will assist restoration efforts.