1 killed in cairo in clashes of pro-government forces and protesters. molotov cocktails, you can see here, have been flying. gunshots have been heard in tahrir square in central egypt. and in medical news, a big move today aimed at making our drinking water safer. the environmental protection agency will set a limit on the amount of chemical per chlorate as well as other toxic chemicals. it's used in fireworks and rocket fuel. it could affect proper development of fetuses and infants. researchers say it could also affect people's thyroid function. an estimated 4% of public water systems contain the chemical. much more on the day's incredible events unfolding in egypt just ahead. a live report on what's happening right now in cairo. [ female announcer ] you use the healing power of touch every day. ♪