A paper appearing in Proceedings of the National Academy of Sciences offers a strikingly simple answer to a longstanding ...

Resurrecting extinct animals is both “exhilarating and terrifying,” says Beth Shapiro, an expert in ancient DNA and a biologist at the University of California, Santa Cruz. Exhilarating because of the ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...