Lightning bolts break apart nitrogen and oxygen molecules in the atmosphere and create reactive chemicals that affect greenhouse gases. Now, a team of atmospheric chemists and lightning scientists have found that lightning bolts and, surprisingly, subvisible discharges that cannot be seen by cameras or the naked eye produce extreme amounts of the hydroxyl radical —
For thousands of years during the last ice age, generations of maritime migrants paddled skin boats eastward across shallow ocean waters from Asia to present-day Alaska. They voyaged from island to island and ultimately to shore, surviving on bountiful seaweeds, fish, shellfish, birds and game harvested from coastal and nearshore biomes. Their island-rich route was
Scientists from Stony Brook University and the Max Planck Institute of Animal Behavior have pieced together a timeline of how brain and body size evolved in mammals over the last 150 million years. The international team of 22 scientists, including biologists, evolutionary statisticians, and anthropologists, compared the brain mass of 1400 living and extinct mammals.
An international research team including scientists from ETH Zurich has shown that almost all the world’s glaciers are becoming thinner and losing mass’ and that these changes are picking up pace. The team’s analysis is the most comprehensive and accurate of its kind to date. Glaciers are a sensitive indicator of climate change — and
A genome by itself is like a recipe without a chef — full of important information, but in need of interpretation. So, even though we have sequenced genomes of our nearest extinct relatives — the Neanderthals and the Denisovans — there remain many unknowns regarding how differences in our genomes actually lead to differences in
One of the great mysteries of modern space science is neatly summed up by the view from NASA’s Perseverance, which just landed on Mars: Today it’s a desert planet, and yet the rover is sitting right next to an ancient river delta. The apparent contradiction has puzzled scientists for decades, especially because at the same
Researchers at Albert Einstein College of Medicine have designed an experimental drug that reversed key symptoms of Alzheimer’s disease in mice. The drug works by reinvigorating a cellular cleaning mechanism that gets rid of unwanted proteins by digesting and recycling them. The study was published online today in the journal Cell. “Discoveries in mice don’t
As NASA’s Perseverance rover begins its search for ancient life on the surface of Mars, a new study suggests that the Martian subsurface might be a good place to look for possible present-day life on the Red Planet. The study, published in the journal Astrobiology, looked at the chemical composition of Martian meteorites — rocks
In two landmark studies, researchers have used cutting-edge genomic tools to investigate the potential health effects of exposure to ionizing radiation, a known carcinogen, from the 1986 accident at the Chernobyl nuclear power plant in northern Ukraine. One study found no evidence that radiation exposure to parents resulted in new genetic changes being passed from
As the COVID-19 pandemic has progressed, it has become clear that many survivors — even those who had mild cases — continue to manage a variety of health problems long after the initial infection should have resolved. In what is believed to be the largest comprehensive study of long COVID-19 to date, researchers at Washington
(CNN) ’ Would-be travelers are crooning a new theme song: “Come fly with me, let’s fly, let’s fly away.” In the European Union, the UK and other corners of the globe, officials are currently considering ways to restart international travel this summer. When that occurs, cinch up your seat belt — traveler numbers will soar.
Then came the fires, the smoke, the evacuations, the days when the sky turned red and they were unable to see the sun. It was terrifying, she said. Understandably. And it’s poised to get worse because of the climate crisis, which is contributing to longer and more dangerous wildfires in the West as humans dump
Busy Friday hit with a bang (as usual). I was supposed to have a teaching class, followed by a lab session and another teaching class. But somehow things just changed and the lab session had to be converted into a teaching class. Suddenly, I was forced to come up with a PowerPoint class within 15