Scanning animal patterns like bar codes boosts conservation.

A retired medical physicist has led a group of volunteers to build a sun-tracking telescope that will be hoisted aloft by a weather balloon on the afternoon of April 8.

The Jets completed two more trades before the NHL trade deadline, obtaining experienced winger Tyler Toffoli and defenseman Colin Miller in separate transactions.

The first observation of humpback whale copulation reveals a surprise.

In the new book Purpose, a Yale psychiatrist argues Darwinian forces are divinely guided.

A controversial theory can explain phenomena attributed to the mystery planet.