Sen. Bernie Sanders is the favorite, but does Elizabeth Warren peel away some progressives after a fiery debate performance? Former Vice President Biden has a lot on the line — and a lot to prove.

Combat helmets have always been made to protect against blunt objects, not blast waves. Despite improvements in helmet design, battlefield brain injuries continue.

Rep. Alexandria Ocasio-Cortez, D-N.Y., rolled out a political action committee to help raise money for outsider candidates — some running against her own House colleagues.

The court said the party's leader violated election law because he gave the new party about $6 million – far more than Thai law allows for political donations. He insists the money was a loan.