In toxicology, a median lethal dose is the quantity of an agent that will kill, within a specified time period, 50 percent of the individuals in a given population. The median lethal dose of a substance is often cited as a measure of how acutely toxic a substance is and is expressed as the amount of substance per kilogram of bodyweight. For instance, the median lethal dose of dioxin is .02 milligrams per kilogram of bodyweight in rats. How much table sugar is considered a median lethal dose?
Lucy Maud Montgomery
Back in the day
The first issue of Sports Illustrated—featuring Milwaukee Braves star Eddie Mathews at bat—was published in 1954. The brainchild of Henry Luce, the founder of Time magazine, it became one of the most influential sports magazines in America. Though Sports Illustrated originally covered a wide range of sports, including hunting and yachting, today it focuses on major sports, such as football and baseball. When was the annual swimsuit issue first published?
Born on a day like today
Lawrence was a British adventurer, soldier, and scholar popularly known as Lawrence of Arabia. He learned Arabic while on an archaeological expedition in Mesopotamia, then served in intelligence for the British army in Egypt during WWI. After conceiving a plan to support an Arab rebellion against the Ottoman Empire—a German ally—he joined the Arab forces and became a leader in the revolt, but he failed to achieve the formation of an independent Arab state. What did he later do under false names?