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Biology

A female dragon mantis with her forked pheromone gland protruding from her rear abdomen.

New Research

This Mantis Attracts Males With a Y-Shaped, Balloon-Like Pheromone Gland

Female dragon mantises attract mates in the dark by inflating a forked, translucent-green organ that researchers say also wiggles

Countries all over the world have made wastewater analysis a standard public health measure, and the U.S. lags behind many of them.

Sewage Has Stories to Tell. Why Won’t the U.S. Listen?

Sewage epidemiology has been used in other countries for decades, but not here. Will Covid change that?

If cats and dogs made up their own country, they would rank fifth in terms of meat consumption.

We Won’t Be the Only Ones Eating Lab-Grown Meat—Our Pets Will Too

Pet food companies are looking to the future with cell-cultured meat

For moms, there's physiological and neurological truth to the cliché that parenthood changes a person.

The New Science of Motherhood

Through studies of fetal DNA, researchers are revealing how a child can shape a mom’s heart and mind—literally

The Indian jumping ant (Harpegnathos saltator).

New Research

This Ant Can Shrink and Regrow Its Brain

Indian jumping ants shrink their brains when they become their colony’s queen, but they can also grow the brain back if they quit the gig

The migration advances an average of 25 to 30 miles a day. A cyclist can cover similar distances.

What I Learned Biking the 10,000-Mile Migration Route of Monarch Butterflies

I set off to be the first person to cycle alongside the butterflies to raise awareness of their alarming decline

As many commercial operators and homeowners are shifting to LEDs, which tend to fall somewhere in the blue-white spectrum, the new results may have important implications beyond tropical rainforests.

Using Amber-Filtered Bulbs Instead of White Light Attracts Fewer Bugs

In a tropical rainforest study, 60 percent fewer insects visited traps illuminated in a golden glow. Researchers say the results may be widely applicable

A tiny, aphid-like whitefly sitting on a leaf.

New Research

This Insect Has Plant DNA in Its Genome

Whiteflies have a gene only found in plants that appears to allow the tiny insects to withstand plants’ chemical defenses

After five weeks of development, a human brain organoid (left) is roughly twice the size of those from a chimpanzee (top right) and a gorilla (bottom right).

New Research

Experiments Find Gene Key to the Human Brain’s Large Size

The single gene identified by the study may be what makes human brains three times larger than our closest great ape relatives at birth

All modern dogs are descended from a wolf species that when extinct around 15,000 years ago. Grey wolves, pictured here fighting for food with now extinct dire wolves (red), are dogs’ closest living relative.

Smithsonian Voices

Meet the Scientist Studying How Dogs Evolved From Predator to Pet

Learn about how humans of the past helped build the bond between us and our favorite furry friends

The biodiversity map predicted that amphibians and reptiles have the most undiscovered species to date. Pictured: blue poison dart frog (Dendrobates tinctorius "azureus")

This Map Shows You the Odds of Finding a New Species in Your Neighborhood

The ‘Map of Life’ predicts where undiscovered birds, reptiles, amphibians and mammals could be found around the world

The stories of children who participated in polio vaccine tests became a constant in media coverage, appearing alongside warnings and debates.

Vintage Headlines

The Press Made the Polio Vaccine Trials Into a Public Spectacle

As a medical breakthrough unfolded in the early 1950s, newspapers filled pages with debates over vaccine science and anecdotes about kids receiving shots

Balaram Khamari's “Microbial Peacock” won second place in the traditional category in the 2020 American Society for Microbiology Agar Art Contest.

How Microbiologists Craft Stunning Art Using Pathogens

Scientists mix microorganisms with agar, a jelly-like substance from seaweed, to create amazing illustrations in petri dishes

Ocean creatures are noisier than scientists first thought.

Women Who Shaped History

Biologist Marie Fish Catalogued the Sounds of the Ocean for the World to Hear

Scientists once thought marine life kept quiet. Then the Navy tapped an aptly named researcher with an open mind

The tear gland organoids grown from stem cells produce a tear-like fluid (red).

New Research

Scientists Make Tiny Lab-Grown Tear Glands Cry

The tear-producing organoids researchers created could one day help relieve medical conditions that cause dry eyes

Leafhoppers are known for devastating crops like potatoes and grapes. But they can be a benign presence within a balanced jungle ecosystem.

Planet Positive

The Wild World of a New Nature Preserve in Ecuador

Scientists have already begun discovering new species in the hotbed of biodiversity

Across the globe, culling has become the default strategy for the egg industry to eliminate the unwanted hatchlings.

Can New Technologies Eliminate the Grim Practice of Chick Culling?

As the U.S. egg industry continues to kill male chicks, scientists are racing to develop accurate and affordable ways to sex a chick before it hatches

The head and the body of the sea slug Elysia marginata, a day after the animal decapitated itself.

New Research

Sea Slug’s Decapitated Head Crawls Around Before Regrowing a Body

Researchers think that lopping off its own noggin could help the critter rid itself of parasites

Jennifer Doudna, a Nobel Prize recipient for her work on the gene-editing tool CRISPR, and the "life sciences revolution" are the dual subjects of Walter Isaacson's latest biography.

How Scientist Jennifer Doudna Is Leading the Next Technological Revolution

A new book from Steve Jobs biographer Walter Isaacson offers an incisive portrait of the gene editing field that is changing modern medicine

Photos of the kitefin shark glowing in the dark.

New Research

Nearly Six-Foot-Long Glowing Shark Discovered in Deep Sea Off New Zealand

The kitefin shark is one of three species of glowing sharks described in a new paper

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