Stem Cell Therapies Could Treat Parkinson’s Disease by Rebuilding Lost Circuitry in the Brain, Studies Suggest
Two small clinical trials tested the safety of injecting stem cells into the brains of Parkinson’s patients and found no adverse effects
Squirrels, Not Monkeys, May Be the Animal Source of Mpox, Researchers Suggest
A preliminary study traces an mpox outbreak in a group of Ivory Coast monkeys to the fire-footed squirrel, indicating the rodent may be a natural reservoir for the virus
How Do Cancer Cells Migrate to New Tissues and Take Hold?
Scientists are looking for answers about how these confounding trips, known as metastases, occur throughout the human body
Record-High 736,000 Sandhill Cranes Flock to Nebraska During Spring Migration Peak—With No Signs of Bird Flu, Despite Concerns
After more than 1,500 of the lanky birds died in Indiana, wildlife biologists in Nebraska were on high alert for the virus—but so far, the visiting birds seem happy and healthy
Sea Lion Bites Surfer Amid One of the Worst Outbreaks of Domoic Acid Poisoning That California Wildlife Rescuers Can Remember
Sea lions, dolphins and birds are sick and dying because of a toxic algae bloom in Southern California—and animal care organizations are overwhelmed by the scale
For Some Women With Serious Physical Ailments, Mental Illness Has Become a Scapegoat Diagnosis
Patients with difficult-to-diagnose conditions like endometriosis are often sent home with diagnoses like anxiety or bipolar disorder
Can Researchers Find Remedies for the Problems Created by High-Altitude Pregnancies?
In people not adapted to life at altitude, the sparse oxygen can impair fetal growth, causing issues that can last a lifetime
Citizen Scientists Are Hitting the Streets of the Country’s Fastest-Warming Cities to Collect Detailed Temperature Data
The heat mapping of metros like Reno, Nevada, could be key to taming urban heat, saving lives and designing for a cooler future
The Future of Transplanting Pig Organs in People
After years of research into xenotransplantation, the field is at a turning point—yet risks and ethical issues remain
You Can Buy a Rare Letter by George Washington Written at a Crucial Turning Point in the Revolutionary War
In the optimistic missive, Washington extols the revolutionary spirit of the American people—even in defeat—and makes a rare reference to the experimental smallpox inoculation that helped prevent outbreaks
Untold Stories of American History
Born Enslaved, This Black Millionaire Attempted to Colonize Mexico and Aspired to Be the Emperor of Ethiopia
William Henry Ellis masqueraded as a Mexican businessman, but he never shied away from his Black roots
On This Day in 1900, the Bubonic Plague Hit the Continental United States, Spiraling Into an Epidemic That Killed 119 People
California officials denied—and tried to hide—the first plague epidemic that reached U.S. shores
FDA Approves Transplant Trials for Gene-Edited Pig Kidneys
Two biotechnology companies will begin testing the procedures in patients suffering from kidney failure
The Death of a Sports Legend on This Day in 1993 Changed How Americans Viewed AIDS
Tennis star Arthur Ashe achieved many firsts as a Black athlete. In the months leading up to his death, he thrust AIDS advocacy into the mainstream
This Heroic Dog Raced Across the Frozen Alaskan Wilderness to Deliver Life-Saving Medicine—but His Contributions Were Long Overlooked
Togo, not Balto, was the driving force behind the 1925 Serum Run to Nome, which found teams of mushers and sled dogs delivering antitoxin to children suffering from diphtheria
President Trump Orders the U.S. to Exit the World Health Organization and Paris Climate Agreement on His First Day in Office
The actions will take effect in a year, reinstating withdrawals he had set in motion during his first term
Why Is Every Human Being Riddled With Genetic Errors?
Your body is a collection of cells carrying thousands of genetic mistakes accrued over a lifetime—many harmless, some bad and at least a few that may be good for you
U.S. Dementia Cases Are Poised to Rise to One Million Each Year by 2060, According to New Projections
As the American population ages, a new study finds the average lifetime risk of dementia for adults over 55 is around 42 percent—a higher rate than previously thought
When the U.S. Surgeon General Shocked Americans by Announcing That Smoking Kills
The 1964 disclosure marked the first time many smokers had heard about the health dangers of tobacco
What Have We Learned From Intentionally Infecting People With Covid-19?
Challenge trials help researchers study immune responses. Skeptics still doubt the approach is worth the risks
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