Image of not-to-scale renderings of the skulls of various primate species
Surface Area of Tooth Roots Predicts Primate Body Size
Researchers determine that a primate’s tooth root, and not just its crown, can yield reliable information about body size, but the relationship between root surface area and diet isn’t as clear.
ABOVE: Ashley Deutsch and Adam Hartstone-Rose
Surface Area of Tooth Roots Predicts Primate Body Size
Surface Area of Tooth Roots Predicts Primate Body Size

Researchers determine that a primate’s tooth root, and not just its crown, can yield reliable information about body size, but the relationship between root surface area and diet isn’t as clear.

Researchers determine that a primate’s tooth root, and not just its crown, can yield reliable information about body size, but the relationship between root surface area and diet isn’t as clear.

ABOVE: Ashley Deutsch and Adam Hartstone-Rose

ecology

Photo of a North American caribou (Rangifer tarandus) in Jasper National Park in Canada
Dozens of Genes Tied to Caribou’s Seasonal Migration
Maddie Bender | May 2, 2022
Researchers tracked the movements of endangered caribou and sequenced a portion of their genomes to determine which genes may influence migratory behavior.
leatherback sea turtle making its way across a beach
Fifteen-Year Project Quantifies Threat to Reptiles
Shawna Williams | Apr 28, 2022
The study estimates that one-fifth of reptile species worldwide are at risk of extinction.
Close-up of a fiber with brightly colored pathogens beside it
Microplastics in Seawater May Harbor Parasites
Christie Wilcox | Apr 26, 2022
Laboratory experiments find that Toxoplasma, Cryptosporidium, and Giardia can congregate on microplastic beads and fibers, suggesting they might make their way into and around the world’s oceans by hitching rides on tiny bits of trash.
A landscape showing a forest that’s been cleared to make room for a farm.
Climate Change and Agriculture Together Halve Insect Populations
Dan Robitzski | Apr 21, 2022
Insect populations and species diversity are drastically reduced in areas affected by both climate change and agriculture-related habitat destruction, according to a new study.
A headshot of Matthew Gage
Evolutionary Ecologist Matthew Gage Dies at 55
Amanda Heidt | Apr 20, 2022
The University of East Anglia researcher was best known for his contributions to the study of sexual selection, particularly post-copulatory sperm competition.
bat flying in front of tan building
Fruit Bats Echolocate During the Day Despite Having Great Vision
Natalia Mesa | Apr 20, 2022
Contrary to what researchers had assumed, Egyptian fruit bats don’t rely solely on sight to orient themselves as they drink and forage for food in daylight. 
Brown bird in nest surrounded by pink flowers
Earlier Nesting in Chicago-Area Birds Linked to Warming
Natalia Mesa | Apr 4, 2022
A study finds that dozens of bird species are nesting up to 25 days sooner each year than they were a century ago, likely due to climate change.
A black and white photo of a man standing at a lab bench, holding up a glass jar
Reimagining Ecology, 1939
Lisa Winter | Apr 4, 2022
Edward Ricketts built his laboratory just onshore from the swirling tidepools of Monterey Bay, California, an ideal backdrop against which he developed a new system for studying the ecology of any given habitat.
Vole in a meadow
Voles Trim Tall Grass to Prevent Attacks
Natalia Mesa | Mar 14, 2022
Mongolian rodents join the ranks of earthworms and beavers as known ecosystem engineers.
edge of the amazon showing deforestation
Amazon Rainforest Nearing Savannah “Tipping Point”
Christie Wilcox | Mar 8, 2022
Half or more of the world’s largest forest is in danger of transitioning into grassland, researchers say.
close-up of a salmon's head swimming among underwater plants
Sudden Decline in Salmon Growth May Signal Ecological Shift
Natalia Mesa | Mar 4, 2022
The decrease in growth appears to be associated with increasing water temperatures, affecting animals throughout the marine food web.
Photo of a Jewel beetle <em>(Sternocera aequisignata)</em>.
Why Are Some Beetles Shiny? It’s Not What Researchers Thought
Connor Lynch | Mar 1, 2022
The glossy shell of some beetles, it has long been speculated, helps hide the insects from predators. A recent paper put the hypothesis to the test—and found it wanting.
Photo of Romaine River in Quebec
Microbial Analysis of River Reveals Considerable Diversity
Annie Melchor | Mar 1, 2022
Scientists in Canada trace how aquatic communities change as Quebec’s Romaine River flows into the sea.
a man collects water using a fishing pole and can
World’s Rivers Rife with Drugs: Study
Christie Wilcox | Feb 15, 2022
Levels of pharmaceuticals considered unsafe for aquatic organisms were found at more than one-quarter of sampling sites.
Conceptual illustration of coral
Environmental Memory: How Corals Are Adjusting to Warmer Waters
Amanda Heidt | Feb 14, 2022
Corals that previously experienced heat stress respond better the next time around. Researchers are trying to figure out how, and hope to one day take advantage of the phenomenon to improve coral restoration efforts. 
Vector drawing of a tropical rainforest with diverse trees
More Than 9,000 Tree Species Await Scientific Description
Christie Wilcox | Feb 1, 2022
A new study of tree biodiversity estimates that Earth boasts 14 percent more tree species than previous efforts have identified.
Thomas Lovejoy wearing glasses and smiling at camera
“Godfather of Biodiversity” Thomas Lovejoy Dies at 80
Lisa Winter | Jan 12, 2022
The famous ecologist was a lifelong champion for conservation.
two women wearing plastic gloves hold up hand-sized air-capture devices in a wooded area.
Scientists ID Dozens of Plants, Animals from Free-Floating DNA
Dan Robitzski | Jan 6, 2022
In a trio of studies, researchers report capturing and analyzing airborne environmental DNA from a wide variety of plants and animals, suggesting a new way of monitoring which terrestrial species are present in an area.
Photograph of a hummingbird
Even the Tiniest of Birds Use Smell in Some Situations
Jef Akst | Jan 4, 2022
Once considered anosmic, birds are now widely recognized as using olfactory cues to aid in a wide range of behaviors.