>> Though long enough to circle the moon more than six times >Why do journalists do this? Good question. You see stuff like this all the time. "That's three t

>> Though long enough to circle the moon more than six times >Why do journalists do this? Good question. You see stuff like this all the time. "That's three trillion gallons of water, or enough water to fill up five million Olympic-sized swimming pools." As if people can somehow visualize five million swimming pools any better than three trillion gallons. Drives me bonkers.