10 Things to Know for Today

The Republican front-runner uses the latest presidential debate to send a message to a party still wary of his insurgent candidacy: "Be smart and unify."

Obama will encourage civic engagement and using technology to solve problems when he appears at the South by Southwest Interactive festival in Austin.

Scientists say human interest in the mammals is depriving them of rest, which can make them more vulnerable to predators and less efficient when seeking food.

Just in time for St. Patrick's Day, Ancestry.com says it's making available 10 million Catholic parish records from Ireland — some dating to 1655 — for free to help people trace their Irish heritage.

The Louisiana black bear, the animal behind the "teddy's bear" inspired by President Theodore Roosevelt, rebounds enough to pull it off the list of federally protected species.