Medicine
Can You Reuse a KN95 or N95 Mask? Experts Say Yes, but Follow These Steps
Regularly check for stretched-out straps, staining and soiling, which can compromise masks' ability to filter viruses like Covid-19
In a First, Man Receives a Heart From a Gene-Edited Pig
The swine-to-person cardiac transplant offers hope for thousands in need of organs
Should You Add a Throat Swab to Your At-Home Covid-19 Test?
Mounting evidence suggests the extra step might catch Omicron infections earlier than a nasal swab alone, but the FDA warns against it
U.S. Sets Record With Over 1 Million New Daily Covid-19 Cases
Experts credit the recent surge to the spreading omicron variant and a lag in case reporting over the holidays
The Veterinarian Brings His Healing Presence to Pets of the Unhoused
Kwane Stewart discovers the little-known world of generosity and love
Sixteen Innovators to Watch in 2022
These trailblazers are dreaming up a future with cell-cultured breastmilk, energy-saving windows and more
Old-Age Record Could Reach 130 by Century's End
Analysis of supercentenarians suggests human lifespan may have no limit
From Korean Pear Juice to Clove Extract, Scientists Put Hangover Cures to the Test—but None Worked
Researchers examined 23 different at-home treatments for side effects of heavy drinking
Ten Scientific Discoveries From 2021 That May Lead to New Inventions
From nanobots to cancer treatments, nature inspires a wide variety of innovations
The Ten Most Significant Science Stories of 2021
Thrilling discoveries, hurdles in the fight against Covid and advancements in space exploration defined the past year
The CDC Now Recommends Pfizer and Moderna Covid-19 Vaccines Over J&J
The decision comes after more evidence linking the Johnson & Johnson shot to a rare blood clotting syndrome
The Search for a Better Treatment for Eating Disorders
Cognitive behavioral therapy is working well for some, but scientists are seeking new innovations to help people with anorexia, bulimia and binge eating
Pfizer Says Covid-19 Pill Is Effective and Likely Works Against Omicron
The drug helps those already infected, but experts say vaccination is the best way to prevent contracting and spreading the virus
Did the Vikings Actually Torture Victims With the Brutal 'Blood Eagle'?
New research reveals the feasibility of the infamous execution method
Six Questions About Waning Immunity to Covid-19 Answered
Experts weigh in on when a reduced immune response occurs and how boosters can help restore defenses
What Experts Do and Don't Know About the Omicron Covid-19 Variant
Scientists have dubbed Omicron a “variant of concern,” but warn against panic
Inside the Innovative Lab Growing Mammal Tissue Using Plants as Scaffolds
Researchers at the University of Ottawa have used apple flesh to create human tissue in the shape of an ear and asparagus stalks to regenerate spinal cords
CDC Panel and FDA Authorize Covid-19 Boosters for All Adults
Americans 18 and older will be eligible for a booster shot of their choice, pending approval from CDC Director Rochelle Walensky
Clara Barton Epitomized the Heroism of Nurses
Two hundred years after her birth, her pioneering commitment to public health has only become more salient
Pfizer Asks FDA to Expand Booster Eligibility to All Adults
Experts are optimistic the request will be granted before the winter holiday season
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