Missing: One Black Hole With 10 Billion Solar Masses
Two of the knots, they concluded, were probably small galaxies with small internal motions being cannibalized by the big galaxy. Measurements of the third knot had such large error bars…
Egypt Denied an Oxygen Failure Killed Covid Patients. We Found That It Did.
EL HUSSEINEYA, Egypt — A cry pierced the night from the balcony of an Egyptian hospital. A nurse was screaming that the patients in the Covid intensive care unit were…
Martinus Veltman, Who Made Key Contribution in Physics, Dies at 89
Martinus J.G. Veltman, a Dutch theoretical physicist who was awarded the Nobel Prize for work that explained the structure of some of the fundamental forces in the universe, helping to…
Twins With Covid Help Scientists Untangle the Disease’s Genetic Roots
What Ms. Burkett and Ms. Miller experienced wasn’t the norm. Many of the conditions that can raise a person’s risk for severe Covid — excess weight, heart disease, diabetes, smoking…
How Elvis Got Americans to Accept the Polio Vaccine
In late 1956, Elvis Presley was on the precipice of global stardom. “Heartbreak Hotel” had reached number one on the charts earlier that year and Love Me Tender, his debut…
Vaccines Need Not Completely Stop COVID Transmission to Curb the Pandemic
COVID-19 vaccine rollouts are finally upon us. They hope that herd immunity—protection from an infectious disease that occurs once a sufficient proportion of the population has been vaccinated or infected—is…
Businesses Aim to Pull Greenhouse Gases From the Air. It’s a Gamble.
“It’s a chicken-or-egg problem,” said Nan Ransohoff, head of climate at Stripe, an online payments company based in San Francisco. “The best way to bring down the cost is to…
How the Suburbs Could Help Save Biodiversity
Plants, and the insects which rely on them, are the living foundations of our planet. But these foundations are under stress because, as we urbanize and suburbanize natural areas, we…
NASA’s SLS Rocket to the Moon Faces Setback After Test
After billions of dollars and a decade of work, NASA’s plans to send astronauts back to the moon had a new setback on Saturday. A planned eight-minute test firing of…
What could go wrong during the test?
Just as with a real launch, technical glitches occur. In an earlier test, known as a wet dress rehearsal, in which the entire countdown was simulated except for igniting the…