A rapidly changing climate might have brought an end to Nordic life on the island In 1721, a Norwegian missionary set sail for Greenland in the hopes of converting the Viking descendants living there to Protestantism. When he arrived, the only traces he found of the Nordic society were ruins of settlements that had been […]
Excerpt from the December 18, 1971 issue of Science News Scientists are working hard to find a substitute for DDT in the control of malaria vector mosquitoes.… Two experiments with mosquitoes breeding in old tires in New Delhi point to an answer: a gene for sterility that would be passed to offspring. Update Today, scientists […]
What you need to know before taking an at-home test or getting tested by a doctor A friend texted me recently because her daughter’s class had a coronavirus outbreak and my friend had some questions about COVID-19 testing. Testing has been on lots of other people’s minds and in the news lately, too. President Joe […]
Clinical trials are in the works for shots against influenza, HIV and more Tiny molecules came up big in 2021. By year’s end, COVID-19 vaccines based on snippets of mRNA, or messenger RNA, proved to be safe and incredibly effective at preventing the worst outcomes of the disease. mRNA vaccines tell our cells how to […]
Pfizer’s and Moderna’s vaccines are more effective and cause fewer serious side effects, new data show People seeking a COVID-19 vaccine should choose an mRNA shot over Johnson & Johnson’s, the U.S. Centers for Disease Control and Prevention recommends. The mRNA vaccines, made by Moderna and by Pfizer and its German partner BioNtech, are safer […]
A lab experiment shows how fear can render some exotic species less harmful Invasive mosquito fish are often fearless. Free from the predators of their native range, these mosquito fish run rampant, throwing naive ecosystems from Europe to Australia out of whack. To keep the problematic fish in check, scientists are trying to strike fear […]
Recognizing that the virus spreads through the air reinforced the importance of wearing masks This year, health experts around the world revised their views about how the coronavirus spreads. Aerosol scientists, virologists and other researchers had determined in 2020 that the virus spreads through the air, but it took until 2021 for prominent public health […]
Higher winter temperatures might make twisters more intense, a climate simulation predicts NEW ORLEANS — Warmer winters could make twisters more powerful. Though tornadoes can occur in any season, the United States logs the greatest number of powerful twisters in the warmer months from March to July. Devastating winter tornadoes like the one that killed […]
Delta’s unique constellation of mutations explains why it has wreaked so much havoc 2021 was a year of coronavirus variants. Alpha and beta kicked off the year, and several worrisome variants later, omicron is closing it out. How omicron may come to define the pandemic’s future remains uncertain. But even as omicron comes on strong, […]
The probe crossed an invisible boundary that has been predicted for decades but never observed For the first time, a spacecraft has made contact with the sun. During a recent flyby, NASA’s Parker Solar Probe entered the sun’s atmosphere. “We have finally arrived,” Nicola Fox, director of NASA’s Heliophysics Science Division in Washington, D.C., said […]
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