World Cup travelers urged to leave common American item out of luggage

→ The TSA issued a warning after World Cup visitors unexpectedly became obsessed with an American staple . → Popular swimming spots are facing unexpected closures as officials monitor a growing concern. → New guidance for travelers highlights growing challenges in one of the world's most historic regions. → A fresh discovery is reshaping what experts thought they knew about Stonehenge's epic origins . → Cruise passengers are sailing toward a new way of eating — and finding results beyond the sca