Obama water campaign raises environmental issue

First Lady Michelle Obama participates in an event at Watertown High School to encourage people to drink more water, Thursday, Sept. 12, 2013, in Watertown, Wis. (AP Photo/Morry Gash)WATERTOWN, Wis. (AP) — First lady Michelle Obama led Wisconsin high school students in a toast to "the best drink in town" Thursday as she launched a campaign to encourage people to drink more water — something she said was the single best thing Americans could do to improve their health.