Pete Buttigieg stakes out a unique space in the Democratic field, how to stop worrying, and some 70,000 Valentines sent to 104-year-old in tribute to military veterans.

White House offers contradictions over Rob Porter background check, U.S. 2018 elections 'under attack' by Russia, and Valentine's Day and chicken wings, a match made in heaven.

National Security Adviser Mike Flynn resigns amid Russia controversy, how to spot sexual abuse in children and how Colombia keeps cocaine from ruining Valentine's Day flowers.

Hillary Clinton and Bernie Sanders clash over cost of plans at Democratic debate, world powers agree to cease-fire in Syria, and 10 interesting facts about Abraham Lincoln's life.