stone wheel in a cave

How Was the Wheel Invented?

Computer simulations reveal the unlikely birth of a world-changing technology nearly 6,000 years ago.

Juneberry: A Summer Sweet for People, Pollinators, and Birds

For millennia, Indigenous peoples in North America derived sustenance from the juneberry, known also as the misâskwatômin, serviceberry, shadbush, or saskatoon.
Emil Nolde, Red Clouds, watercolour on handmade paper, 34.5 x 44.7 cm.

How a Postwar German Literary Classic Helped Eclipse Painter Emil Nolde’s Relationship to Nazism

While Nolde was one of the many victims of the Third Reich’s repressive responses to “degenerate art,” he was also one of Nazism’s great admirers.
These fossilized foraminiferan shells, dating back 35 to 45 million years, were found in Tanzania. They all belong to species that are now extinct. The largest are about half a millimeter in diameter.

The History of the Ocean, as Told by Tiny Beautiful Fossils

Bountiful remains of foraminifera reveal how organisms responded to climate disturbances of the past. They can help predict the future, too.
A man scrambles up a gully on the Crestone Needle in the Sangre de Cristo Mountains, Colorado.

How Science Might Help Keep Wild Places Wild

Recreation researchers are studying how to minimize human impact on public lands while maximizing accessibility.
Fruit of the pong-pong tree (Cerbera odollam)

Cerbera odollam: “The Suicide Tree” That Harms and Heals

Even before The White Lotus, people feared the poisonous pong-pong tree, Cerbera odollam. But there's another way to look at the plant and its effects.
Exposition internationale des Arts décoratifs et industriels modernes de Paris, 1925

Art Deco: 100 Years Since the Paris Exhibition That Revolutionized Modern Design

The landmark event displayed competing interpretations of “the modern” in design, art, and architecture.
Ken Bundy from Bridgeport Ct. who served in Vietnam for 2 years touchs the Vietnam Memorial, November 11, 2003 in Washington, DC.

What Veterans’ Poems Can Teach Us About Healing on Memorial Day

A scholar and military veteran proposes that poems written by veterans that focus on honoring those who have died in service can help heal an ailing nation.
Red-lined Sea Cucumber Thelenota rubralineata in the shallow water near Moyo Island, Sumbawa, Indonesia.

Weird and Wondrous Sea Cucumbers

These spiny or slimy ocean creatures display an astonishing diversity of appearances, behaviors and lifestyles. Many are increasingly threatened.