Zoo Animals are giving humans a run for their money in the assisted reproduction department. Mei Xiang, a giant panda at the National Zoo, gave birth to twin babies this past Saturday, thanks to artificial insemination. And earlier this month, scientists announced the birth of a bouncing baby black-footed ferret, conceived with cryogenically preserved sperm from a father who had died twenty years ago.
Why Frozen Sperm Can’t Save Earth’s Imperiled Species—Yet
