Despite conservation efforts across an entire continent, the African elephant is becoming more endangered, not less, due, in large part, to poachers.

Researchers say they can grow large amounts of the transplantable tissue using cells from a small number of donors.

Roughly 90% of researchers in a recent survey said scientists and policymakers don't communicate enough. But, only about 60% said they were sure of the names of their elected federal representatives. Experts probed this paradox at the AAAS Forum on Science & Technology Policy.