Carmen in Florence, Italy, April 1964. Photographed by Ronald…

Carmen in Florence, Italy, April 1964. Photographed by Ronald Reis.

Ottawa farmer’s market, Ontario, 1961.

Ottawa farmer’s market, Ontario, 1961.

Four guys and a cabriolet, circa 1938.

Four guys and a cabriolet, circa 1938.

Beautiful life of the U.S in the 1960s through amazing found…

Beautiful life of the U.S in the 1960s through amazing found Kodachrome slides.

Analysis of Hominin Teeth Tells Us About Prehi…

Analysis of growth rings in Australopithecus africanus teeth may tell us about prehistoric hominin’s breastfeeding habits. A recent analysis looked at four teeth, recovered from South Africa’s Sterkfontein Cave, belonged to two individuals who lived between 2.6 and 2.1 million years ago. The results suggest that they exclusively breastfed for the first six to nine months of life.

Although other foods were added around the 1st birthday, milk intake also ramped up again each year, over a period of four or five years. Why this yearly return to breastmilk? Perhaps during times of food scarcity, mothers would return to breastfeeding, to ensure their children got enough to eat.

The analysis found an additional piece of evidence suggesting that breastmilk was a starvation-food used to keep young children nourished. Levels of lithium in the teeth rose right before the period of breastfeeding began each year. Such a distinctive biological time-stamp connected to the later-life breastfeeding suggests that the breastfeeding began again each year in the same season, likely corresponding to the time of year when food was scarcest. One can speculate that lithium was high in a specific food source which became available only during a certain season each year (like apples in autumn) – or which Australopithecus africanus only resorted to when other foods were scarce (like tree bark in winter).

Nick and Bobbi Ercoline, the couple featured on the iconic…

Nick and Bobbi Ercoline, the couple featured on the iconic Woodstock album cover, pose together at the site where the photo was taken 50 years ago, in Bethel, New York. (Burk Uzzle/Reuters/Dan Fastenberg)

Read more of their fascinating love story here.

30 awkward vintage photos of celebrities posing with their…

30 awkward vintage photos of celebrities posing with their beloved cats.

Cool snaps that defined television styles of the 1970s.

Cool snaps that defined television styles of the 1970s.

An English model on holiday at St. Jean Cap Ferrat in France,…

An English model on holiday at St. Jean Cap Ferrat in France, July 23, 1955. Photographed by Bert Hardy.

A dog sitting in a car on the beach of Jekyll Island, Georgia,…

A dog sitting in a car on the beach of Jekyll Island, Georgia, 1940. Photographed by Ivan Dmitri.