Charles and Jon talk to Australian author, broadcaster and wildlife nut Bradley Trevor Greive (BTG) from his home in California.BTG has an extraordinary CV: he was a paratrooper and cartoonist before becoming a successful author and broadcaster. In between he found time to win the French Polynesian Rock Lifting Championship, graduate from the Russian Cosmonaut Space Program, spend 6 years working on Brown Bears in Alaska and still practice on his ukulele. And he devotes considerable energy to...