In 2021, more than 47 million Americans quit their jobs, according to the Bureau of Labor Statistics - the most resignations on record. As resignation rates remain high in early 2022, in what has been…
Primitive humans lived at high altitudes
Image copyright Jean-Jacques Hublin, MPI-EVA, Leipzig Image caption The Xiahe mandible was found in 1980 in Baishiya Karst Cave Scientists have found evidence that an ancient species of human called Denisovans lived at high altitudes…