Doctors have long known that taking antioxidant supplements may actually increase the risk for cancer in some people. One new mouse study offers an explanation why.
Or at least keep your teeth cavity-free. A growing chorus of medical researchers say our bacteria-killing zealotry is misguided. Instead of fighting bugs, they argue, we should train them to do our bidding and then set them loose in our bodies. The trouble is keeping them there
The nation's research-grade cannabis is controlled by the National Institute on Drug Abuse, whose mission to curb use is at odds with that of researchers looking to study pot's therapeutic properties.
After overestimating its energy needs, the software giant allegedly strong-armed a small-town utility into reducing a six-figure penalty by threatening to needlessly burn millions of watts.
How a virus seems to help fight off HIV and Ebola
Researchers Propose A Bacterial Toxin May Be Partly Responsible for A Variety of Diseases
The frog that laid the golden egg.
Rossi--a lone Italian inventor with no real credentials and a history as a convicted scam artist--has convinced a small army of researchers that his box can harness a new type of nuclear reaction. What if they're right?
Let's count the ways.
Researchers have revealed why users are so much more prone to disease
This is your brain on stress
The annual Austin conference has announced the winners of its sustainable-startup competitions, and Popular Science was there.
Diet soda makes us fat, and eating veggies won't do much of anything unless you eat five full servings a day, study says
He builds under-the-skin chips that deliver drugs straight into the blood
But scientists warn that the treatment does nothing to prevent cancer risks, and that it's thus far limited to mice who smoke
While the medical marijuana debate rages on, drug companies race to leverage the power of pot
Researchers have found a possible lynchpin stemming from the immune system
The FDA sidesteps human safety trials to clear a risky anti-nerve-gas pill.
The findings may be no-brainers (yes, you do get sick in winter), but these studies uncover hidden truths in conventional wisdom
Genetic evidence that the mouse model is broken for some serious diseases.
One man's experience with LED grow lights
The ability to reprogram the immune system is one of the most sought-after goals in medicine. Now researchers are closer than ever to pulling it off in patients with Type 1 diabetes, one of whom happens to be our correspondent
Some transhumanist Web sites that are worth checking out
More than 50 of the most dangerous, disgusting, humiliating and just plain bad professions
Everything you need to know about the hottest topic in
medicine, from big-league breakthroughs and new therapies to emerging health risks and the patients willing to take them
Scientists are making headway on our most vexing health issues
Wreaking havoc in your mouth and head
A new study found cognitively impaired former football players aren't much different from non-players with cognitive impairments.
A new data-mining project analyzes Danish health records to chart the trajectory of diseases throughout a life.
Controversial theorist Aubrey de Grey insists that we are within reach of an engineered cure for aging. Are you prepared to live forever?
You don't even have to try. The things you do as a matter of course can have grievous ecological effects
Every day we're exposed to thousands of man-made chemicals, some of which seep into our bodies and remain there for decades. What that means for our health, we don't fully understand--but I subjected myself to a battery of new tests in search of answers
Doctors seek inspiration from unexpected sources to work toward solving some of medicine's toughest challenges
To be safe, maybe limit your all-Snickers diet to just this week.
Bill Faloon has pursued immortality for decades. Now he's got lots of company. What does science have to say?
The genetic tests our writer took to determine what kinds of illnesses he might have
Last July, 9-year-old Alex Everett received his first shot of synthetic human growth hormone--an injection he will get every night for eight years. Alex is not sick--he is short. Should we be treating stature as a medical condition?
Is sloth bad by comparison or just plain bad?
UCLA researchers discover brain damage that previously couldn't be seen until after players died--a finding that could help save players' lives.
Flashbacks do occur, but very rarely.
A scientist with a swab and a microscope could tell what school you went to
A crash course in modeling the outbreak of a deadly disease
Researchers are gaining insight from post-mortem microbial interactions
An up-close look at chronic traumatic encephalopathy
Mice exposed to radiation were more likely to fail memory tests and develop brain plaques associated with Alzheimer's.
Rewiring the brain to battle seizures, blindness, and more
The big and bad crises that could wipe out humanity
Twenty-five curious, mysterious, or otherwise beguiling destinations to satisfy your inner science-history geek
The biofilms where bacteria congregate are like little apartment buildings
For black men, racial discrimination speeds up aging at the cellular level, according to a new study.
These down-and-dirty labors are hard, dangerous, and outright gross—and people love them anyway
The frontier of science is looking inward to fix what ails us.
Sometimes our biggest fear is not knowing what to fear most. Fortunately, the weird science of risk analysis can teach us to judge better and fear smarter
Hepatitis C: Just the Facts
It takes real proof to back up even the simplest theories--these 10 studies show that the obvious can have not-so-obvious implications
Cancer-killing nanoparticles, fat-fighting nucleic acids and more breakthroughs set to transform health care
Why a field researcher from America has exposed his colon to the gut microbiome of a tribesman from Tanzania
Microbes that eat and breathe electricity have forced scientists to reimagine how life works—on this planet and others
Researchers are uncovering some pretty strange culprits behind the obesity epidemic—everything from air-conditioning to infectious love handles
How do we decide how rare an animal is? How do we figure out how long before it goes extinct? And how do we stop that from happening?
PopSci discovers the elements, one by one
New research suggests that ordinary shoes work just fine for runners with under- and over-pronating feet.
The answers to the most nagging, fascinating, and bizarre questions of the summer movie season.
Hi, new friend. You are pretty.
Researchers have revealed the Heartland Virus is Widespread in America
And that's the problem
Stories from the coolest day jobs in the world.
What bad headlines call lazy is what early humans called survival.
The indicator state is asking: what's the best way to vote?
The story of how one of the most polluted waterways in America came to be located in one of the country's most expensive neighborhoods. Also: dysentery, cancer, and arsenic poisoning.
Neurologist Tally Lerman-Sagie saw her first cases of children having seizures a decade ago, but didn't have the technology to find their cause until now.
Jayson Lusk's new book makes the case for robot chefs and pink slime
While far from a cure-all, technology will play an important role in health care reform
Using in-car monitoring apps to keep an eye on things like blood sugar
Out of the wild
A new study is a first step toward a objective way to measure physical pain.
A team of European researchers finds the genetic mutation responsible for a subject's inability to feel pain.
A paleobotanist studying plant evolution, a statistician developing new treatment regimens, and other amazing people
Ahead of the Super Bowl, here's the lowdown on brain damage in sports.
The highest-prescribing states give out almost three times as many opioid scripts as the lowest-prescribing ones.