It is a big mystery why amphibians especially frogs are vanishing all around the world.
All amphibians start life with gills, living under water, but most eventually develop lungs.
In addition, they can breathe through their moist skin. This double life in water and on land makes them especially vulnerable to toxins in their environment. Yet, they are also disappearing from what appear to be pristine areas. The cause of this mystery may be bad news for all of us.