Headlines

How Does Life Unfold? A Landscape Metaphor Comes Into Its Own.

C.H. Waddington’s powerful image of embryonic stem cells specializing on a rolling landscape has captivated biologists since the 1950s. Experimental data is finally confirming, and complicating, his visionary ideas. The post How Does Life Unfold? A Landscape Metaphor Comes Into

Where does Earth's nitrogen go? Two atoms offer a clue

Nitrogen is one of life's building blocks, but it's only helpful in the right amounts. Too much nitrogen in water, for example, can lead to poor water quality and the gradual death of aquatic organisms. Microbes remove nitrogen from water by converting it to a gas that escapes

Scared of Shots? A Favorite Tune Helps Mute the Pain

Many people really hate needles. When they have to give blood or get an IV for even a small medical procedure, they may panic, tensing up their muscles and spiking their heart rate, which can amplify the pain of the poke. Some people even suffer a sustained shock of pain and

Only one workout helped older adults lose fat and keep muscle

A six-month study suggests that high-intensity interval training (HIIT) may offer older adults a powerful advantage: losing body fat while keeping their muscle. Unlike moderate-intensity workouts, which led to a small loss of lean muscle, HIIT preserved it while also improving

Bacteria turn a virus’ own weapon against it

Researchers have uncovered a new way bacteria detect viral attacks: a virus-produced enzyme cuts a bacterial sensor protein, triggering a self-destructing immune response. The discovery could lead to more effective phage therapies against antibiotic-resistant bacteria and

'Molecular movie' finally reveals how penicillin is made

Researchers from the University of Oxford and international collaborators have revealed previously unseen rapid chemical stages in the formation of β-lactam antibiotics like penicillin, offering insights that can support future antibiotic development. The findings have been

A 9-billion-year-old signal could help explain dark energy

A Canadian radio telescope has detected the faint glow of hydrogen from billions of years ago using only its own observations, proving a long-awaited way to map the distant universe can actually work. CHIME can use this hydrogen signal to trace how matter is spread across space

A quantum prediction from 1931 just came to life

Nearly a century after physicist Hans Bethe predicted them, scientists have created and directly observed unusual quantum states known as “Bethe strings” in an ultracold gas. By cooling cesium atoms to near absolute zero and trapping them in thousands of tiny one-dimensional

October’s night sky is full of cosmic tricks and treats

October’s skies are packed with celestial surprises, from Jupiter disappearing behind the Moon to two meteor showers lighting up the darkness. NASA highlights four must-see events, including shooting stars from Halley’s Comet and a glowing Hunter’s Moon just before Halloween.