Using a scratch-and-sniff test, researchers discovered that smell loss after COVID-19 may linger for more than two years.

Duping a guppy is easier than duping a ring dove — at least when it comes to a classic optical illusion.

While ultramarathoners are capable of huge energy spurts, overall the athletes top out at 2.5 times the metabolic rate needed for basic body functions.

Blazes sparked in wild lands are devastating communities worldwide. The only way to protect them, researchers say, is to re-engineer them.

Protein is having a moment. But even if most people are eating enough protein, studies suggest they may not be eating the right mix.

In The Water Remembers, Amy Bowers Cordalis shares her family’s account of the Indigenous-led fight to restore the Klamath River in the Pacific Northwest.

Sensor data reveal greater noctule bats chasing, catching and chewing on birds during high-altitude, nighttime hunts.

A study that screened young children in Gaza for malnutrition found that nearly 16 percent suffered from wasting in August 2025.

The global die-off of coral reefs signals a critical shift in Earth’s climate system with global environmental consequences along with economic ones.

Normal cellular processes in living things — from germinating plants to our own cells — create biophotons, though escaping light isn’t visible to us.

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Grape plant bacteria might help mitigate smoke taint in wine by breaking down chemicals that evoke an ashy taste.