It only takes a rustle and splash of an orange buoy floating on the Thone River for two Australian scientists to know they've found what they're looking for: the elusive platypus. By James Redmayne ...

BYABARRA, Australia, April 27 (Reuters) - It only takes a rustle and splash of an orange buoy floating on the Thone River for two Australian scientists to know they've found what they're looking for: ...