
A former lab rat, Esther Landhuis is a California-based freelance journalist who writes about biomedicine and STEM diversity. Her stories have also appeared in Science News, Scientific American, NPR, Nature, Chemical & Engineering News and Undark.

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All Stories by Esther Landhuis
- Physics
Picture This: Christmas from space
Satellite images show that cities brighten during holidays. Charting such changes can point to factors affecting energy use and contributing to global warming.
- Genetics
Why animals often ‘stand in’ for people
Rats, birds, fish — even flies and worms — can stand in for people in laboratory testing. This allows scientists to safely evaluate harmful chemicals as well as to identify and test potential new drugs. But such tests will never be a foolproof gauge of effects in people.
- Health & Medicine
Can soft drinks speed aging?
A new study suggests a reason why daily sugary-soda drinkers are more prone to disease: Guzzling these drinks shortens the protective caps on chromosomes. If the caps get too short, cells die.
- Health & Medicine
Exercise builds brawn — and brains
One 20-minute session of leg exercises improved memory recall by about 10 percent.
- Tech
Repelling germs with ‘sharkskin’
A biotechnology company has found a way to repel superbugs without toxic chemicals. It mimics the texture of a shark’s skin.
- Tech
Plants ‘listen’ for danger
Scientists used lasers to show that plants can “hear” insect pests. Those leafy plants then mount a chemical attack in response to the bug’s chewing sounds — but not toward harmless noises such as a gentle breeze or a bug’s mating call.
- Microbes
The war on superbugs
Doctors and scientists are exploring ways to stem the growing global crisis of antibacterial resistance.
- Microbes
Explainer: What you can do to fight antibiotic resistance
Doctors and scientists are not the only people who can help preserve the effectiveness of life-saving antibiotics. Even patients have a role to play, as these tips show.
- Microbes
Superbugs: A silent health emergency
Have antibiotics become too popular? Overusing these medicines fuels resistant germs that pose a global health threat.
- Microbes
Explainer: Where antibiotics came from
A mold proved the source of the first known antibiotic: penicillin. But chemical dyes would lead to the first antibiotics used in treating people.
- Plants
Wily bacteria create ‘zombie’ plants
Scientists have discovered how some plant pathogens ensure their own survival by transforming flowering plants into strictly leaf-producing ones. These green ‘zombies’ attract insects that the parasites need to help them spread to other plants.
- Fossils
Scary ‘chicken’ roamed Earth with T. rex
Scientists have just pieced together evidence of a weird new dinosaur that sported sharp claws, feathers and a beak. And it just may have been one of the last dinos to roam Earth about 67 million years ago.