Medicine

The 23 pairs of human chromosomes. People who inherit two tall X chromosomes (bottom right) are much more susceptible to autoimmune diseases than people with one X and one short Y chromosome.

Why Do Women Get More Autoimmune Diseases? Study of Mice Hints at Answers

Four in five people with an autoimmune disease are women. New research points to an RNA molecule involved in silencing one of their X chromosomes as a potential culprit

Miniature dachshunds have a median lifespan of 14 years, according to the data.

Which Dogs Live the Longest? Scientists Say Small and Long-Nosed Canines Outlive Others

A new study of more than 500,000 dogs in the United Kingdom adds more nuance to our understanding of their life expectancy based on breed, size, face shape and other factors

The archive was found by a direct descendant of Herman Matzinger, the doctor who performed McKinley's autopsy.

Newly Discovered Papers From President McKinley's Assassination Are for Sale

The archive belonged to Herman Matzinger, who performed the autopsy on the 25th president and conducted a bacteriological analysis to rule out the possibility of poison-tipped bullets

A Parkinson’s patient in Nice, France, is prepped for a surgery to implant electrodes into the brain. The technique, called deep brain stimulation, is being used experimentally or in small studies to treat addiction.

Can a Brain Implant Treat Addiction?

Some experts tout deep brain stimulation as a lifeline for people struggling with opioid use. Others question the hype

Patrons drank less wine at bars and pubs in England that removed the largest serving size from their menus.

People Drink Less Wine When Bars Remove the Largest Glass, Study Finds

The simple change could help reduce alcohol consumption and improve health at the population level, U.K. researchers say

The Dana-Farber Cancer Institute

Top Harvard Cancer Institute Will Retract Six Studies and Correct 31 More After Photoshop Claims

British biologist and blogger Sholto David alleged that executives at the Dana-Farber Cancer Institute published papers with manipulated data and images

People with long Covid sit in the audience at a U.S. Senate hearing about the condition on January 18.

Scientists Find Indicators in Blood Linked to Long Covid, Hinting at Future Treatments

One part of the immune system appeared to be overly active in long Covid patients in a small study, a finding researchers hope could help diagnose or treat the condition

Scientists produced the most complete catalog of marine microbe DNA yet, including data from the deeper zones of the oceans.

DNA From the Ocean's 'Twilight Zone' Could Lead to New Lifesaving Drugs, Scientists Say

Researchers catalogued the genes of more than 300 million groups of marine bacteria, viruses and fungi in hopes that the database could lead to breakthroughs in medicine, energy and agriculture

A Tuskegee study subject gets his blood drawn in the mid-20th century.

What Newly Digitized Records Reveal About the Tuskegee Syphilis Study

The archival trove chronicles the extreme measures administrators took to ensure Black sharecroppers did not receive treatment for the venereal disease

Leaves from the iboga plant, collected in 1933 from Angola. The psychedelic drug ibogaine can be derived from the plant's root bark.

A Lesser-Known Psychedelic Drug Shows Promise for PTSD Treatment

Ibogaine, derived from a central African shrub, has been used in rituals for two millennia. But in a small study, it appeared to reduce symptoms of PTSD among veterans

Hercules measures 7.9 centimeters from foot to foot, making him larger than a baseball.

Meet 'Hercules,' the Largest Male Funnel-Web Spider Ever Found

Despite belonging to the most venomous arachnid species on Earth, the spider will be using his bite for good in a program to produce antivenom

Matabele ants will tend to the wounds of their nest-mates that have had their legs bitten off by termites.

These Ants Can Diagnose and Treat Their Comrades' Infected Wounds

Matabele ants in sub-Saharan Africa often sustain injuries while hunting termites—and their survival strategy may help humans fight infections, too

The capsule has a gelatinous coating that dissolves in stomach acid.

Engineers Design a Vibrating Pill for Weight Loss That Could Create a Feeling of Fullness

The capsule is the size of a multivitamin, and in an experiment with pigs, it appeared to reduce the animals' appetites

Monarch butterflies' signature white spots could help them fly—and inspire better drones.

Seven Scientific Discoveries From 2023 That Could Lead to New Inventions

Biologists learned lots about animals and plants this year, and their findings could inspire better robots, medicine and environmental technologies

A colored image of an anthrobot. Hairlike structures called cilia enable the bots to move.

Tiny 'Robots' Made From Human Cells Show Wound-Healing Potential

The so-called "anthrobots" can self-assemble and move on their own, and they prompted damaged neurons to regenerate in a recent study

Photographs and other items connected to Florence Nightingale

These May Be the Last Photos Ever Taken of Florence Nightingale

The rare images are among a collection of artifacts connected to the "Lady with the Lamp" that recently sold at auction

Our ten favorite science books of the year covered everything from astronomy to undersea exploration.

The Ten Best Science Books of 2023

From stories on the depths of the ocean to the stars in the sky, these are the works that moved us the most this year

Illustration of the thalamus, a region of the brain linked to learning and memory.

Brain Implants Show Promise for People With Traumatic Brain Injuries in Small Study

Electrodes placed in the brains of five patients led to "profound" improvements in cognitive function, even years after their injuries

Eczema affects almost 32 million people in the United States.

Here's What Can Cause Itchiness, According to New Research

Scientists discovered a connection between a bacteria linked to eczema and an itch-causing enzyme in a study of mice

The monkey "chimera" with two sets of DNA at three days old. Some body parts appear tinted green, because the researchers marked the transplanted cells with fluorescent dye to trace what parts they developed into.

Scientists Created a Monkey With Two Different Sets of DNA

So-called "chimeric" monkeys could help scientists understand human diseases and aid in conservation efforts, but the research raises ethical questions

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