Imaging links toolmaking with human smarts
A researcher describes how getting modern people to make Stone Age tools shows what brain power our ancestors needed to do the same thing Shelby Putt, Indiana University How did…
The evolving story of the Folsom spear point
The dating is better, but it is now less clear if this famous artifact killed the bison it was found in This story, modified from material put up in two…
To properly pickle a leaky tumor
Give it a shot of alcohol Jello and come back next week. It could be gone, says one study . P Rajendran While you always can have too much of…
Light exposure at night linked to breast cancer
Starting with a study of nurses on night duty, a researcher explains the dangers involved Richard G. “Bugs” Stevens, University of Connecticut Artificial light has transformed the night sky, a…
Sifting through the history of fire
How and when our ancestors mastered the use of fire remains debated. Researchers are hunting for answers buried in ancient ash and baked soils This story, which originally appeared in…