Long before modern humans built cities or carved out farms, woolly mammoths wandered across frozen plains with thick coats and steady steps. Their bones, tusks, and frozen bodies have offered clues to ...

One of Yuka’s legs, illustrating the exceptional preservation of the lower part of the leg after the skin had been removed, which enabled recovery of ancient RNA molecules. Photo credit: Valeri ...

North America's mammoth species were breeding together within the past 40,000 years. Fossil teeth found in Canada show that Columbian and wooly mammoths regularly had calves together where the ...