Denis Vishnevskiy, chief of the unit of the Chernobyl Radiation and Ecological Biosphere Reserve, foreground right, and his colleagues carry a box with a beaver preparing to release it into a forest at the Chernobyl exclusion zone, Ukraine, Tuesday, April 13, 2021. To the surprise of many who expected the area might be a dead zone for centuries, wildlife is thriving: bears, bison, wolves, lynx, wild horses and dozens of bird species. According to scientists, the animals were much more resistant to radiation than expected, and were able to quickly adapt to strong radiation. (AP Photo/Evgeniy Maloletka)