The couple answer your questions about their time in the Frank Church-River of No Return Wilderness, wolf sightings, and the making of the PBS Nature film.

An interview with Salmon: Running the Gauntlet filmmaker Jim Norton.

An interview about koala communication, vocalization, and social structure with Dr. Bill Ellis, head of The University of Queensland's Koala Ecology Group.

All cetaceans, including whales, dolphins, and porpoises, are descendants of land-living mammals. But how did these terrestrial ancestors evolve over millions of years into the whales and dolphins we are so familiar with today?

"Wiser filmmakers would choose subjects which are better studied. I get a thrill from knowing that what we have recorded is new to science." An interview with Jungle Eagle filmmaker Fergus Beeley.

Radioactive Wolves writer and director on filming in Chernobyl's radioactive exclusion zone and its surprising wildlife population.

NATURE interviews Romulus Whitaker, the reptile expert and conservationist featured in "The Dragon Chronicles."

Milton Garces records infrasound in order to understand what's happening in Kilauea's underground lava tubes. Read the interview.

Death Valley may seem an unlikely habitat for a fish, but the Devil's Hole pupfish has managed to thrive here for thousands of years.