jo nesbo. the book is called "the son." back in a moment. stay with us. >> charlie: fred krupp is here. 29 years, the president of the environmental defense fund. recently turned his focus to shell, becoming a centralized voice in the polarizing debate on fracking. the surge in natural gas and oil production in the last three years has made u.s. the largest hydrocarbon producer. but fracking proposes risks to the environment. he and mike bloomberg wrote an april 29 "new york times" op-ed about fracking and in the may and june issue of foreign affairs magazine he writes an article entitled "don't just drill, baby, drill carefully." nice to have fred krupp back on the program. >> thanks, charlie. >> charlie: what is shale? shale is a formation of rock that years ago, a long time ago, trapped inside of it, in many cases, both oil and natural gas, depending on which shale formation, various ratios, and other hydrocarbons as well. for a long time, nobody knew how to get the fossil fuels out of it in an economic way, but over the last decade or so

jo nesbo and the book is called "the son." back in a moment. stay with us. ♪ >> fred krupp is here.or 29 years he has been the president of the environmental defense fund. he has put his focus on shale, becoming a voice on the debate on fracking. the surge in domestic oil and gas production has made the u.s. the world's fastest-growing hydrocarbon producer. despite economic benefits, fracking poses potential risks to the environment. he and mike bloomberg wrote an april 29 new york times op-ed about fracking. about fracking. he also wrote an essay titled "don't just drill, baby. drill carefully." welcome back. what is shale? >> it is a formation of rock that years ago, long time ago trapped inside of it in many cases both oil and natural gas depending on which shale formation and other hydrocarbons. for a long time, nobody knew how to get either of those fossil fuels out of it in an economic way, but over the last decade or so, people have figured out if you drill down and drill horizontal, and crack it open, you can extract the resource. >> where is the debate? >> the debate is ove

. ♪ >> jo nesbo is here and one of norway's biggest writers according to the new yorker magazine.s the country's first international pop-culture star. his work belongs to crime fiction known as nordic noir. is best feeling about -- his best-selling series has sold 40 million copies. he recently released his new english thriller called "the son" about an imprisoned drug addict convicted of murder wrong late. welcome. this is an incredible story of you. a guy who had been a rock star, guy who is done so many things. then you find this great career as a writer. does it surprise you? >> well, i think it surprised me when -- at the age of 37, i wrote my first novel. but, it didn't surprise any of my friends or people around me. >> because they knew you had it in you? i would actually write the leverage for my friends bands. i would write short stories. i was of the generation that still wrote letters. >> can you care to rise -- characterized -- are norwegian crime novels different? do they have their own identity? >> i think it is hard for me as in the region -- as a norwegian a scandi