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More Testosterone Won’t Make a Better Soldier or a Tougher Man—Aggression and Strength Drive T Levels, Not the Other Way Around

Defense Secretary Pete Hegseth is requiring service members to screen for low testosterone levels. Ironically, the military lifestyle itself is more likely to lower T levels.

July 31, 2026

A “Hellish Cloud” Descended on Los Angeles in 1943

It marked the city's first smog incident. Here’s what it looked like—back then and over the years that followed.

July 31, 2026

Microfossils Help Crack Mystery More Than 100 Million Years in the Making

Almost all of these tiny organisms vanished way back in the early Cretaceous period

July 30, 2026

NASA Just Spotted a Wandering Black Hole Devouring a Star

Black holes sometimes make a break for it

July 30, 2026

Curiosity Rover Finds “Sea of Polygons” on Martian Surface

It’s not the first time the robot has found interesting patterns on the red planet

July 30, 2026

The Odyssey of the Stone Age Maltese

New research points to a seafaring people who ranged far and wide

July 30, 2026

Did Ancient Humans Prefer Hunting Female Mammoths?

Female or not, mammoths were definitely key to their survival

July 30, 2026

Earth Is Lumpy as Hell

It’s what’s on the inside that counts

July 30, 2026

Mothers and Fathers Experience Dramatically Different Health Consequences

Recent study explores the gender gap in parental health

July 29, 2026

How Celebrities Became America’s Unregulated Drug Pushers

Social media endorsements can sway consumers, and no one is watching

July 29, 2026

Does Having a Pet Really Improve Our Health?

It could go either way, depending on the relationship

July 29, 2026