Environment

Wildfires used to 'go to sleep' at night. Climate change is turning them into prime burning hours

Burning time for North American wildfires is going into overtime. Flames are lasting later into the night and starting earlier in the morning because human-caused climate change is extending the hotter and drier conditions ...

Earth Sciences

The Colorado River disappeared from the geological record for 5 million years: Scientists now know where it went

Geologists have solved the mystery of the disappearance from the geological record, millions of years ago, of one of North America's most important waterways: the Colorado River. A paper published in Science shows that the ...

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Medical Xpress

Tech Xplore

Cutting calories to slow aging—without compromising health

Restricting calorie intake in species such as mice, rhesus monkeys, and fruit flies has been shown to extend their lifespans. In some cases, these animals not only live longer, but are also free of disease. But when pushed ...

Kinship interlocks: How the rich stay rich

How do some wealthy families remain in the upper class for many generations, while other rich families do not? That is the question author Shay O'Brien (Massachusetts Institute of Technology) tackles in the sociological study ...

New metric identifies at-risk mangroves before they disappear

Scientists from UC San Diego's Scripps Institution of Oceanography and the Centro para la Biodiversidad Marina y la Conservación in Mexico have developed a tool that identifies mangrove patches facing the greatest risk of ...

Making AI safer for victims of intimate partner violence

Conversational AI tools denied blunt requests for harmful content by researchers posing as intimate partner abusers, but these guardrails were easily circumvented when they requested the content under false pretenses, a new ...

The quietest place we've ever listened from

We have been searching for signals from other civilizations for over sixty years. Radio telescopes on Earth have swept the sky, listened patiently, and found nothing but silence. It is a search that demands extraordinary ...