With infections increasing once more, and hospitalization rising among older adults, health experts offer a timely warning: a coronavirus infection can look different in older patients.
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Can the Olympics Take the Heat?
Plus: squirrel acrobats, gecko navigators, hair thieves and other natural overachievers in the Friday edition of the Science Times newsletter.
Is the Delta Variant Making Younger Adults ‘Sicker, Quicker’?
Many doctors on the front lines say unvaccinated patients in their 20s and 30s are becoming more severely ill, and more quickly. But comprehensive data is lacking.
Touring Trinity, the Birthplace of Nuclear Dread
A recent visit to the site of the first atomic bomb explosion offered desert vistas, (mildly) radioactive pebbles and troubling reflections.
‘X’ Marks the Spot: Officials Map a Route Out of the Pandemic
Governments and organizations around the world are using geospatial data and digital mapping tools to guide their vaccination campaigns.
Vaccinated People May Spread the Virus, Though Rarely, C.D.C. Reports
The agency cited an outbreak in Provincetown, Mass., in which most of the infected were immunized. An internal C.D.C. document paints an even more harrowing picture.
C.D.C. Internal Report Calls Delta Variant as Contagious as Chickenpox
Infections in vaccinated Americans are rare, compared with those in unvaccinated people, the document said. But when they occur, vaccinated people may spread the virus just as easily.
How Often Do the Vaccinated Spread Covid-19?
The C.D.C.’s new masking advice was based in part on data showing that the virus can thrive in the airways of vaccinated people. The findings are expected on Friday.
What Animals See in the Stars, and What They Stand to Lose
Humans aren’t the only species that navigate by starlight. Animals from birds to dung beetles may do it, too — and might become disoriented as our city lights drown out the heavens.
Australia’s Trash Parrots Invent New Skill in Suburbs
Sydney’s clever and adaptable sulfur-crested cockatoos learn how to pry open garbage bins by watching one another.