How cheetah mummies could help bring the species back to Arabia
Arabian cheetah mummies' DNA reveals that the long-lost population could be closely replaced by a cheetah population in northwestern Africa.
Arabian cheetah mummies' DNA reveals that the long-lost population could be closely replaced by a cheetah population in northwestern Africa.
We summarize the week's scientific breakthroughs every Thursday.
Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.