Fleet-Footed Stone Agers

Stone Age people, unlike their Neandertal contemporaries, had heel bones spring-loaded for long runs, a new study suggests.

Stone Age people, unlike their Neandertal contemporaries, had heel bones spring-loaded for long runs, a new study suggests. Neandertals weren’t left in the dust, though. The backs of their feet gave them a leg up on power walking, say anthropologist David Raichlen of the University of Arizona in Tucson and his colleagues. In ancient Homo sapiens, as in people today, a short lower heel stretched the Achilles tendon taut, Raichlen’s team concludes. That arrangement increased the tendon’s spring-like action during running and reduced energy consumption, enabling extended excursions.

How to bring more confidence to your conversations

Entrepreneur and author Andrew Horn shares his rules for becoming an assured conversationalist.

content.jwplatform.com
Videos
  • To avoid basing action on external validation, you need to find your "authentic voice" and use it.
  • Finding your voice requires asking the right questions of yourself.
  • There are 3-5 questions that you would generally want to ask people you are talking to.
Keep reading Show less

Bespoke suicide pods now available for death in style

Sarco assisted suicide pods come in three different styles, and allow you to die quickly and painlessly. They're even quite beautiful to look at.

The Sarco assisted suicide pod
Technology & Innovation

Death: it happens to everyone (except, apparently, Keanu Reeves). But while the impoverished and lower-class people of the world die in the same ol' ways—cancer, heart disease, and so forth—the upper classes can choose hip and cool new ways to die. Now, there's an assisted-suicide pod so chic and so stylin' that peeps (young people still say peeps, right?) are calling it the "Tesla" of death... it's called... the Sarco! 

Keep reading Show less

Scientists find a horrible new way cocaine can damage your brain

Swiss researchers identify new dangers of modern cocaine.

Getty Images
Mind & Brain
  • Cocaine cut with anti-worming adulterant levamisole may cause brain damage.
  • Levamisole can thin out the prefrontal cortex and affect cognitive skills.
  • Government health programs should encourage testing of cocaine for purity.
Keep reading Show less