They survived whatever extinguished the dinosaurs, yet in our age, they seem to be vanishing. In a three-part series beginning today, Mary Losure examines this scientific mystery. It's a detective story in which the victims are frogs, not people - but people may have a big stake in the mystery's solution.
Amphibians are sensitive indicators of environmental problems.
If we can find out what's killing frogs, we may also learn if it will someday harm us. What they mean is that the places where frogs live are being destroyed or altered by people. Well, there's one that's not too old. That was a fairly large frog that didn't make it. This road west of Minneapolis cuts right through the Baker Park Reserve.