As their name suggests, dung beetles feed partly or exclusively on feces. Many dung beetles roll manure into balls—sometimes as large as apples—which they then use as food sources and brooding chambers. They can eat more than their own weight in 24 hours and are considered helpful because they convert manure into substances usable by other organisms. According to estimates, how many millions of dollars do dung beetles save the US cattle industry each year by burying above-ground livestock feces?
Back in the day
The Beaumont children's disappearance from a popular Australian beach launched what would become the largest police investigation in Australian criminal history. On a hot summer day in 1966, nine-year-old Jane Beaumont took her two younger siblings to a nearby beach, but they never returned home. Police investigations revealed that the children had been seen with a strange man and later walking alone, but the case was never solved. In what way did their disappearance change Australian society?
Born on a day like today
MacArthur is a major figure in US military and diplomatic history. He played a vital role in the Pacific theater of World War II and commanded UN forces during the Korean War. After Japan's surrender in 1945, MacArthur worked to rebuild the devastated nation, drafting a new Japanese constitution and helping to establish a democratic government. Many viewed MacArthur as a hero, but he was suddenly relieved of his duty by President Truman at the height of the Korean War for what reason?