 I am going to start swimming in the Seine every day. McClure says he drank some of the water. If there's something in it, he may die. Other swimmers who are coming for the Olympics will know that if I don't die, that it's safe to swim in. Good news for him. New tests show water quality in the Seine improved over the past week. I'm Ed Donohue. Scientists have made a surprising discovery about termite mounds in South Africa. Correspondent Donna Warder has the story.