Uncategorized
- Planetary Science
Methylated gases could be an unambiguous indicator of alien life
On Earth, methylated gases are produced by organisms cleaning up their environment — and by little else. The same might be true on some exoplanets.
- Health & Medicine
4 key things to know about lung infections caused by fungi
News that three kinds of fungi are more widespread than previously thought prompted reader questions about risk, symptoms and more. We answer them.
- Physics
Rare ‘dark lightning’ might briefly touch passengers when flying
Gamma-ray blasts from thunderstorms might occasionally zap passing airplanes, briefly exposing passengers to unsafe levels of radiation.
- Science & Society
Pandemic languishing is a thing. But is it a privilege?
Positive psychologists contend that people can flourish if they try hard enough. But this pinnacle of well-being might not be so fully in our control.
- Genetics
50 years ago, scientists sequenced a gene for the first time
Within five decades, scientists went from sequencing a single gene to sequencing the entire human genome.
- Archaeology
Complex supply chains may have appeared more than 3,000 years ago
Finds from one of the world’s oldest shipwrecks hint that miners in Central Asia and Turkey provided a crucial metal to Mediterranean rulers.
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Seeking the elements that make modern life possible
Editor in chief Nancy Shute discusses the importance of rare earth elements to society.
- Physics
Here’s how to make a fiber-optic cable out of air using a laser
A hollowed-out laser beam heats a tube of air that surrounds cooler air, providing a way to guide light much the way fiber optics do.
- Archaeology
Lasers reveal sites used as the Americas’ oldest known star calendars
By around 3,100 years ago, Mesoamerican ritual complexes tracked celestial cycles using a 260-day count, a huge lidar mapping project shows.
- Physics
Tiny bubbles that make icicles hazy are filled with water, not air
Like tree rings, layers of itty-bitty water pockets also preserve a record of an icicle’s growth.
- Microbes
Meet some of the microbes that give cheeses flavor
Knowing which genus of bacteria is responsible for which flavor could open the door to new types of cheese.
