Dow Closes Lower After Brussels Attacks

US stock indexes closed mostly lower as airlines, cruise companies, and travel booking sites fell following the attacks in Belgium. Royal Caribbean dropped 3% Tuesday and Priceline declined 2%. Energy and materials companies also moved lower. Health care and technology stocks gained ground. The Dow Jones industrial average gave up 41 points, or 0.2%, to 17,582. The Standard & Poor's 500 index edged down a point to 2,049. The Nasdaq composite edged up 12 points, or 0.3%, to 4,821. (Read more Dow Jones stories.)