Phys.org: “For five million years, woolly mammoths roamed the earth until they vanished for good nearly 4,000 years ago—and scientists have finally proved why. The hairy cousins of today’s elephants lived alongside early humans and were a regular staple of their diet—their skeletons were used to build shelters, harpoons were carved from their giant tusks, artwork featuring them is daubed on cave walls, and 30,000 years ago, the oldest known musical instrument, a flute, was made out of a mammoth bone. Now the hotly debated question about why mammoths went extinct has been answered—geneticists analyzed ancient environmental DNA and proved it was because when the icebergs melted, it became far too wet for the giant animals to survive because their food source—vegetation—was practically wiped out…”