Science News for Students | News and feature articles from all fields of science
a photo of three guys playing football outside and sweating
Top Story
Cool Jobs: Soaking in sweat
Some researchers collect human sweat to answer a host of science questions
a photo of a woman with sweat showing through her shirt, her arms are raised above her head
Body functions
 
Explainer: The bacteria behind your B.O.
Our armpit sweat isn’t stinky until certain bacteria come to dine
a map of the Milky Way showing the warped curvature of the galaxy
Astronomy
 
The Milky Way is shaped like a curvy potato chip
Cepheid stars help scientists trace the galaxy’s warped structure
a photo of a doctor putting on protective gear
Health
 
Two Ebola treatments prove highly effective in a clinical trial
The ongoing field experiment in Congo will now focus on only the top-performing therapies
three surgeons operating on an unseen person
Technology
 
A new electric surgery tool may someday fix nose, ear and eye problems
This painless alternative to traditional surgery uses electrochemistry to reshape tissue without causing scars

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Editor's Picks
two girls work on a math problem together on a whiteboard

Two girls work together solving a math problem in class. Such collaboration in class may represent a new approach to learning math better.

Antonio_Diaz/iStock/Getty Images Plus

Mathematics
Science is helping kids become math masters
class time
Eureka! Lab
Science Education
More classroom time increases reading skills
climbing girl
Brain
Lessons from failure: Why we try, try again
Trending
three zombies
Behavior
Zombies are real!
a photo of an Ethiopian farmer's hands holding wheat grown in his field against a blue sky

Melese Tsegaye, a farmer in Kulumsa, Ethiopia, holds seed heads taken from stalks of wheat. Wheat is one of many crops that have suffered from disease outbreaks.

Peter Lowe/CIMMYT/Flickr (CC BY-NC-SA 2.0)

Agriculture
As infections ravage food crops, scientists fight back
a photo of one cat licking another cat

Most cat allergies are triggered by a protein called Fel d1. It’s carried in cats’ saliva. New research aims to disable the protein at its source.

SunRay BRI Cattery RU/iStock/Getty Images Plus

Animals
Giving cats a special food may one day help people with cat allergies
5 pretty faces
Psychology
What makes a pretty face?
a photo of a green emerald
Science Education
 
Scientists Say
Scientists Say: Mineral
These are solid elements or compounds that form a crystal structure and occur naturally in the Earth
a photo of a skinny mouse and a plump mouse side by side
Microbes
 
Obesity in mice caused by defects in their immune system
Related changes to gut microbe mix and fat absorption may be at work in people as well
a photo of an Ethiopian farmer's hands holding wheat grown in his field against a blue sky
Agriculture
 
As infections ravage food crops, scientists fight back
Everything from chocolate to wheat to citrus fruits are at risk from devastating diseases
a photo of one cat licking another cat
Animals
 
Giving cats a special food may one day help people with cat allergies
Pet-food maker Purina is studying how adding an antibody to cat chow curbs allergic reactions
two Microdocodon gracilis fossils side by side
Fossils
 
A flexible bone that aids mammals in chewing arose during the Jurassic
The structure may have helped give rise to the Age of Mammals
Blogs
a photo of a green emerald

This emerald is a form of a mineral called beryl, which is made of several different chemical elements.

 rep0rter/iStock/Getty Images Plus

Scientists Say
Scientists Say: Mineral
a photo of the nose of a white dog peeping out from under a plaid blanket

The nose is an olfactory organ. It’s involved in the sense of smell.

Chalabala/iStock/Getty Images Plus

Scientists Say
Scientists Say: Olfactory
a photo of a hummingbird hovering near a flower

Tiny hummingbirds have wings and hearts that beat very quickly. The frequency can be measured in hertz.

gjohnstonphoto/iStock/Getty Images Plus

Scientists Say
Scientists Say: Hertz
big bang

This image shows how the universe might have come to be, from a small dense point at left, through “quantum fluctuations” and then to the Big Bang. That time of rapid inflation left behind the light pattern that scientists see today — called cosmic background radiation. After a period called the “dark ages,” matter condensed and cooled, and stars and planets began to form. 

WMAP Science Team/NASA

Scientists Say
Scientists Say: Big Bang
Body & Brain
a photo of three guys playing football outside and sweating

Sweating isn’t embarrassing, it’s a talent. It’s how the body cools itself. And humans are very, very good at it.

Dynamic Graphics Group/Getty Images

Body functions
Cool Jobs: Soaking in sweat
a photo of a woman with sweat showing through her shirt, her arms are raised above her head

Relax. Everybody sweats. But what causes that distinctive sweaty smell? Blame your bacteria.

Dandamanwasch/iStock/Getty Images Plus; adapted by L. Steenblik Hwang

Body functions
Explainer: The bacteria behind your B.O.
a photo of a doctor putting on protective gear

In the Congolese city of Beni, a doctor dons protective gear prior to seeing patients with possible Ebola infections. Early reports from a clinical trial in Congo are now in. They found that two drugs were highly effective at preventing death from the disease.

Vincent Tremeau/World Bank/Flickr (CC BY-NC-ND 2.0)

Health
Two Ebola treatments prove highly effective in a clinical trial
three surgeons operating on an unseen person

To reshape living tissue, surgeons usually cut into cells and stitch the wound. This type of surgery creates scars. A new, painless approach would damage few cells and might take only a few minutes.

andrei_r/iStock/Getty Images Plus

Technology
A new electric surgery tool may someday fix nose, ear and eye problems
a WHO health worker screening people for Ebola
Health
 
Congo’s Ebola outbreak declared a public health emergency
There’s a high risk of the deadly virus spreading to neighboring countries
a photo of the nose of a white dog peeping out from under a plaid blanket
Body functions
 
Scientists Say
Scientists Say: Olfactory
This word refers to your sense of smell
a young girl leaves flowers at a memorial in El Paso, Texas on August 3, 2019
Science & Society
 
Beyond the El Paso shooting: Racist words and acts harm kids’ health
U.S. doctors are tackling racism as a public health issue — one that can cause lifelong harm
a photo of 5 small white beads floating in the air with Asier Marzo in the background holding a pair of tweezers
Physics
 
Sound ways — literally — to move and filter things
The tiny force of a sound wave can get some impressive work done
mouse investigating lab equipment
Brain
 
Lasers make mice hallucinate
Scientists control brain cells to create fake visions
Space
a map of the Milky Way showing the warped curvature of the galaxy

This new map of the Milky Way reveals the warped shape of the galaxy. The map was made with stars called Cepheids. In this image, the Cepheid stars (green) are overlaid on top of an image of another warped galaxy. That galaxy is NGC 4565. The star icon indicates the sun.

J. Skowron/OGLE/Astronomical Observatory/Univ. of Warsaw

Astronomy
The Milky Way is shaped like a curvy potato chip
an illustration of a ploonet

There’s a new kind of space object out there. The “ploonet.” This is a moon that escaped the gravity of a gas giant. These ploonets might explain the existence of comets around distant stars, shown here in an artist’s illustration.

Lynnette Cook/Fuse/NASA

Planets
What do you call a moon that escapes its planet? A ‘ploonet’
an illustration of the galaxy Antila 2

Antlia 2, a dim galaxy that orbits the Milky Way, appears at the right in this illustration. It’s a bit bigger but has fewer stars than the Large Magellanic Cloud (left), which also orbits our Milky Way.

V. Belokurov/Univ. of Cambridge/CCA, based on the images by Marcus and Gail Davies and Robert Gendler

Astronomy
Caught: A ghost galaxy that may have hit ours long ago
an image of a plasma eruption from the sun

Blame it on the sun. Extreme space weather events begin when a blob of plasma erupts from the sun and streams toward Earth.

NASA/Goddard Space Flight Center

Astronomy
Space weather forecast: Big storms ahead
Invention & Innovation
three surgeons operating on an unseen person

To reshape living tissue, surgeons usually cut into cells and stitch the wound. This type of surgery creates scars. A new, painless approach would damage few cells and might take only a few minutes.

andrei_r/iStock/Getty Images Plus

Technology
A new electric surgery tool may someday fix nose, ear and eye problems
a photo of a discarded styrofoam cup on the ground surrounded by plants

Unlike this Styrofoam cup, made from plastic, a new kind of foam is biodegradable.

tomschirtz/iStock/Getty Images Plus

Materials Science
Trees may become the key to ‘greener’ foam products
a photo of a group of green disk robots

Individually, each of these disks can only expand and contract in place. But together, when loosely connected by magnets, they can complete a task like moving toward a light.

Shuguang Li/Columbia Engineering

Robotics
This robot’s parts are helpless alone, but turn smart as they team up
a young boy smiling and sitting in wheelchair, he's wearing a blue hat

Chemotherapy can cause your hair to fall out and make you feel tired and sick. Delivering the chemo drugs inside nanoparticles could reduce these side effects by making sure the drug goes only to the cancer.

Steve Debenport/E+/Getty Images

Chemistry
Remote-controlled nanoparticles could fight cancer — gently
a photo of vast mats of Sargassum seaweed floating on the ocean's surface
Algae & Fungi
 
Record seaweed belt spanned from Africa to Gulf of Mexico
The enormous Sargassum bloom seen in 2018 could become the new normal, scientists worry
an illustration showing how one cell divides into two cells during mitosis
Cells
 
Scientists Say
Scientists Say: Mitosis
This is when a cell divides into two identical cells
Brain
 
High fat diet removes brain’s natural brake on overeating
The finding, from a study in mice, may point to a similar risk for people
an illustration of a ploonet
Planets
 
What do you call a moon that escapes its planet? A ‘ploonet’
Giant planets in other star systems might lose their moons, creating new planets
an illustration of the galaxy Antila 2
Astronomy
 
Caught: A ghost galaxy that may have hit ours long ago
The star system Antlia 2 turned up not far from where astronomers predicted the culprit should be
Latest Headlines
a photo of three guys playing football outside and sweating

Sweating isn’t embarrassing, it’s a talent. It’s how the body cools itself. And humans are very, very good at it.

Dynamic Graphics Group/Getty Images

Body functions
Cool Jobs: Soaking in sweat
a photo of a woman with sweat showing through her shirt, her arms are raised above her head

Relax. Everybody sweats. But what causes that distinctive sweaty smell? Blame your bacteria.

Dandamanwasch/iStock/Getty Images Plus; adapted by L. Steenblik Hwang

Body functions
Explainer: The bacteria behind your B.O.
a map of the Milky Way showing the warped curvature of the galaxy

This new map of the Milky Way reveals the warped shape of the galaxy. The map was made with stars called Cepheids. In this image, the Cepheid stars (green) are overlaid on top of an image of another warped galaxy. That galaxy is NGC 4565. The star icon indicates the sun.

J. Skowron/OGLE/Astronomical Observatory/Univ. of Warsaw

Astronomy
The Milky Way is shaped like a curvy potato chip
a photo of a doctor putting on protective gear

In the Congolese city of Beni, a doctor dons protective gear prior to seeing patients with possible Ebola infections. Early reports from a clinical trial in Congo are now in. They found that two drugs were highly effective at preventing death from the disease.

Vincent Tremeau/World Bank/Flickr (CC BY-NC-ND 2.0)

Health
Two Ebola treatments prove highly effective in a clinical trial
Math & Technology
three surgeons operating on an unseen person

To reshape living tissue, surgeons usually cut into cells and stitch the wound. This type of surgery creates scars. A new, painless approach would damage few cells and might take only a few minutes.

andrei_r/iStock/Getty Images Plus

Technology
A new electric surgery tool may someday fix nose, ear and eye problems
a photo of 5 small white beads floating in the air with Asier Marzo in the background holding a pair of tweezers

Asier Marzo uses the force of sound to keep multiple plastic beads (white dots) floating in the air.

Asier Marzo

Physics
Sound ways — literally — to move and filter things
an animated image showing magnetized liquid droplets floating in oil and spinning

Three permanently magnetized liquid droplets floating in oil. As they spin in response to a rotating magnetic field, their activity wraps orange dye around themselves.

X. Liu et al/Science 2019

Physics
Tiny new magnets are not only squishy but also liquid
three different humanoid bots from vaguely human (left) to very human (right)

Very realistic humanlike robots, like the one on the right, are often perceived as eerie. Activity in a region of the brain that makes social judgments may be responsible for these uneasy feelings.

A.M. Rosenthal-vonder Pütten et al/J. Neuroscience 2019

Brain
This brain region may make lifelike robots creep you out