The passing of time is a big part of our life. You're born on a particular day of a month, in a year. We celebrate birthdays every year we get older. At school, there are set times for registration, ...

Their dams cause floods, and that gets them in trouble with humans. But in the right place, more water can be a big help. By Catrin Einhorn and Kim Raff In the Ozarks, the growing college town of ...