Not all cavemen are in the past. The Modern Caveman Movement involves men in urban gyms, grunting and sprinting on all fours, lifting heavy stones, and running barefoot.
Intelligent. Optimistic. Curious.
Audio
Historian Donald Sassoon tells Jim Fleming that the Mona Lisa is a great painting, but that other factors conspired to make it an international icon.
Emily Rapp had her foot amputated when she was 4, and the rest of the leg at age 8.
In his book "Back to Our Future" David Sirota says the proof is in the staying power of 80s pop culture.
Edmund Morris says Theodore Roosevelt was a force of nature - man of towering intellect, boundless physical energy and firm convictions whose greatest achievement as President was his commitment to conservation.
Franz Lidz is the author of "Ghosty Men: The Strange but True Story of the Collyer Brothers, New York's Greatest Hoarders."
Whether or not you're a person who cares about fashion, how and where our clothes are made has environment, social, and economic consequences. The global garment industry is a trillion dollar business, that employs millions of people. Elizabeth Cline is an advocate for so-called "slow fashion."
If there is an evolutionary imperative for running, maybe runner's high holds a clue. Dave Raichlen conducted a study about runner's high using humans, dogs and ferrets.
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