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Biology

What made the U.S. Post Office Department decide to start its airmail service so early, before air travel was even common?

Why Did the U.S. Post Office Start Airmail So Early? And More Questions From Our Readers

You’ve got questions. We’ve got experts

First-place winner: rice weevil (Sitophilus oryzae) on a grain of rice

These Beautiful Microscope Photos Capture Tiny Pests, Spores, Sensory Neurons and Sunflower Hairs

Nikon has announced the winners of its 51st annual photomicrography competition

Green sea turtles are rebounding, thanks to global conservation efforts.

After Decades of Decline, Some Good News Is Here for Green Sea Turtles

The International Union for Conservation of Nature no longer considers the marine creatures endangered and has instead reclassified them as a species of least concern

Hematoids can shed light on blood formation during early human development.

Researchers Created Structures That Produced Blood Cells in the Lab—With a Process That Mimics Real Human Embryos

The advance could carry significant implications for studying blood diseases and early human development

Coins left behind as offerings helped the researchers measure the size of the imprint from photos.

Chicago’s Famous ‘Rat Hole’ Wasn’t Actually Made by a Rat, According to a Statistical Analysis

Scientists are almost certain the viral imprint in a city sidewalk was actually made by an unlucky squirrel

Scientists gathered samples from the U.S. Army Corps of Engineers’ Permafrost Tunnel Research Facility in central Alaska.

Scientists Resurrect 40,000-Year-Old Microbes From Alaskan Permafrost. What They Found Raised Worries About the Future of a Warming Arctic

The experiments offer new insights into one of the “biggest unknowns” in how the climate will change in the years to come

A male and female olive baboon

Research Sheds Light on Why Women Live Longer Than Men—and Why This Pattern Will Likely Continue

Scientists studied hundreds of mammal and bird species to shed light on sex-based lifespan differences

Two new studies are shedding more light on the behavior and lifespans of naked mole rats.

Scientists Explore the Mysterious Lives and Longevity Superpowers of Naked Mole Rats

The nearly hairless rodents are extremely resistant to cancer—and can live to be 37 years old

A dusky shark swims in the Mediterranean Sea off the coast of Hadera, Israel, where dusky sharks and sandbar sharks tend to gather.

Why Do Sharks Go Into Feeding Frenzies? A Case Study of a Recent, Unusual Attack on a Human Looks for Answers

After multiple dusky sharks killed a swimmer off Israel’s coast this year, scientists investigated what might have triggered the attack in hopes of preventing similar incidents

The mold growing on batches of Bayley Hazen Blue cheese changed from green to white between 2016 and the present day.

Scientists Watch Fungi Evolve in Real Time, Thanks to a Marriage Proposal in a Cheese Cave

A new study pinpoints a disruption in a gene that made a beloved blue cheese’s rind go from green to white

Scientists converted a Type A kidney to a Type O kidney, then transplanted it into a brain-dead patient.

New Research

Scientists Converted a Kidney’s Blood Type, Then Implanted It Into a Brain-Dead Patient for the First Time

This area of research is still in the early stages, but it could someday help reduce wait times for patients needing kidney transplants

A superb fairy-wren calls to a Horsfield's bronze-cuckoo. Brood parasites like cuckoos lay eggs in other birds' nests and leave them behind for the host birds to raise.

Birds Make an Alarm Call That Spans Species and Continents—and May Offer Insight Into the Evolution of Human Language

More than 20 species make a nearly identical noise to warn nearby birds of brood parasites, a behavior that bridges the “sharp division between animal communication systems and human language”

The earwig’s delicate, paper-thin wings open to more than ten times their folded size, thanks to its origami-like creases.

Studying Clever Creases in Nature May Inspire Foldable Structures for Drones and Robots

Engineers are turning to animal origami, from insects that tuck away wings to a protist with an accordion-like neck, for design help

Dandelions are strategic about when to disperse their seeds, new research suggests.

Scientists Are Uncovering the Secrets of How Fluffy, White Dandelions Spread Their Seeds

Their seed dispersal strategies have helped these ubiquitous plants flourish all over the world, new research suggests

Generations of bearded vultures return to the same nesting sites for centuries, offering archaeologists a glimpse into the past.

Generations of Bearded Vultures Stashed Humans’ Treasures, Including a 650-Year-Old Sandal, in These Bird Nests

Researchers recovered more than 200 human artifacts from historical nests in southern Spain

A European stonechat with an orange-and-black-patterned Glanville fritillary butterfly in its beak

New Research

To Hide From Predators, Some Animals Camouflage Into Their Surroundings, While Others Display Bright Colors as a Warning. What Keeps Them Safest?

While many circumstances factor into the calculation, researchers found in a new study that local predators, not appearance alone, had the greatest impact on a color strategy’s success

 Maria Branyas Morera on her 117th birthday

Scientists Studied the Genes of a Woman Who Lived 117 Years. Here’s What They Learned

Maria Branyas Morera, formerly the world’s oldest person, allowed researchers to take a detailed look at her biology before she died last year

The first-place winner of the 2025 Nikon Small World in Motion Video Competition captures a self-pollinating flower.

Stunning Microscope Videos Highlight Self-Pollination, Algae and Tumor Cells in the Nikon Small World in Motion Contest

The annual video competition focuses on the tiny wonders of the natural world

A sea lamprey shows off its nightmarish mouth.

This Invasive Vampire Fish Is Helping Researchers Understand the Human Nervous System in Jaw-Dropping Ways

The sea lamprey looks like it’s from another planet, but this ancient creature has a surprising amount in common with humans

Scientists are considering what limits to potentially place on mirror-image cell research.

Scientists Weigh the Risks of ‘Mirror Life,’ Synthetic Molecules With a Reverse Version of Life’s Building Blocks

Though mirror biology might lead to improved drugs and other innovations, scientists have warned against potentially devastating consequences of this research

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