Bajau boys on boat

Humans Are Still Evolving

Biologists suggest that evolution never stops, even for modern humans. This is especially true in parts of the developing world.
Chan Chan idol

Child Sacrifice in the Ancient Americas

At various sites throughout Peru and Argentina, archaeologists have found remains of child sacrifices.
Henrietta Lacks portrait

Henrietta Lacks, Immortalized

Henrietta Lacks's "immortal" cell line, called "HeLa," is used in everything from cancer treatments to vaccines. A new portrait memorializes her.
Mechanical Turk

Amazon’s Mechanical Turk has Reinvented Research

Online services like Amazon's "Mechanical Turk" have ushered in a golden age in survey research. But is it ethical for researchers to use them?
3d printing biological

3D Printing Body Parts

3D printing has evolved far beyond printing out a simple item using plastic. For example, scientists Jody Connell and colleagues described an innovative use of the technology to create three-dimensional bacteria cultures.
Axolotl

The Race to Save the Axolotl

When an axolotl loses a limb, it regrows, and nary a scar remains. But this incredible creature is on the brink of extinction.
Wild Child earth day

Re-Wild Your Child!

On Earth Day, one mom argues for “green time” over “screen time.”
Molten lava erupts from Eyjafjallajokull, Fimmvorduhals, Iceland

Volcanoes, Climate Change, and The Birth of Christianity

The massive, deadly eruption of the Icelandic volcano Eldgjá in 10th century brought climate change and Christianity to the island colony.
NSF early star rendering

The Earliest Stars

Astronomers who noticed a slight blip in space's background radiation got an insight not just into the early stars but into the age and nature of the early universe.

Converting Tobacco Fields into Solar Farms Can Save Half a Million Lives a Year

The cost of generating solar power has dropped so dramatically, it is now economically advantageous for tobacco farmers to replace tobacco with solar farms in many places.