Scientific American.com

Dark matter could be an entire dark sector of the universe, with its own particles and forces

The U.S. Army Corps of Engineers has uncharacteristically been working with nature instead of bulldozing it into submission. Will this enlightened approach prevail?

Studies of the horns, spikes, plates and clubs of dinosaurs could help settle a long-standing debate over their function

Scientists say that officials from the National Institutes of Health urged them to remove references to mRNA vaccine technology

Proposed cuts to Medicaid could undo advances in treatment for opioid use disorders, risking more overdoses, deaths and stress on the U.S. health system

A genetic analysis reveals that Fiji’s iguanas are most closely related to lizards living in North America’s deserts. How is this possible?

Inaudible ultrasonic beams steered around obstacles can create pockets of sound in an otherwise quiet room, acoustics experts report

They may tell us they hate chores, but kids who help around the house report feeling accomplished and competent, not to mention happy

A planned project in Texas could be the world’s first direct air capture development to rely primarily on electricity produced on site by wind power

A new form of “adaptive” deep-brain stimulation adjusts itself based on the brain’s unique signals

After 150,000 articles and 17 million genome sequences, what science has taught us about SARS-CoV-2

USAID investments significantly reduced deaths among children under age five and women of reproductive age, studies show

New work reveals a surprising hero in combating altitude sickness

With wildfires happening more often and burning more area, homes need to be “hardened” to make them more fire-resistant

The EPA rolls back regulations, NASA launches two exciting missions, and we discuss the surprising way whale urine moves nitrogen across the ocean.

Firefly Aerospace’s Blue Ghost Mission 1 lunar lander snapped incredible photographs of the March 13–14 total lunar eclipse, as seen from the moon

Charged water droplets generate sparks that can forge organic compounds

Roughly 8,000-year-old remains unearthed from present-day Tunisia held a surprise: European hunter-gatherer ancestry

Defense Secretary Pete Hegseth wants to end the Pentagon’s climate efforts. Some experts say the move could hurt military readiness

The intriguing chemistry of a rock collected by the Perseverance rover could trace to microbial activity—or not