The decline in frogs and other amphibious species has been used as a warning of imminent environmental collapse for at least the past twenty-five years. What often gets lost in the propaganda is that scientists to this day aren't really sure what's causing it. Now a new group has come up with a startling suggestion:

A disease threatening amphibians worldwide may have spread because of the use of frogs in pregnancy tests.

The theory is being debated at a summit in Washington DC where scientists hope to produce an action plan to conserve frogs, toads and salamanders.

Just when you thought science couldn't get any weirder...