About 5.6 million years ago, the Mediterranean Sea was cut off from the Atlantic Ocean, likely due to tectonic shifts that closed the Strait of Gibraltar. For thousands of years afterward, the Mediterranean evaporated away, becoming saltier and leaving massive deposits of salt and minerals on the sea bed until the sea had disappeared. The straight was reopened and the sea refilled during a massive flood 500,000 years later. Today, the sea is still saltier than the Atlantic Ocean. Why?
Back in the day
When the NASDAQ stock exchange began trading in 1971, it was the world's first electronic stock market. Founded in New York by the National Association of Securities Dealers, NASDAQ initially existed as computer bulletin board system that did not yet connect buyers and sellers. Today, it lists more companies and has more trading volume than any other US electronic stock exchange. In 2007, NASDAQ acquired the oldest stock exchange in America for $652 million. Which exchange did NASDAQ buy?
Born on a day like today
Verne was a French novelist credited with originating the modern genre of science fiction. Early on, he was interested in theater and wrote librettos for operas. Later, he drew upon his knowledge of science and geography to write romances of extraordinary journeys, which quickly became very popular. He wrote more than 50 books in his lifetime, including A Journey to the Center of the Earth and Around the World in Eighty Days. Why did Verne's nephew shoot him in the leg in 1886?