BILL McKIBBEN COMMENTARY THINK GLOBAL HOST INTRO: WE'RE TAKING AN IN-DEPTH LOOK AT GLOBALIZATION THIS WEEK -- LEARNING HOW THE WORLD IS GETTING SMALLER IN SO MANY WAYS. BUT THE ENVIRONMENTALIST AND WRITER BILL MCKIBBEN SAYS THE WORLD IS ALSO GETTING BIGGER. TOO BIG, IN FACT, FOR MOST OF US. LAST WINTER, MCKIBBEN ATE ONLY FOOD GROWN WITHIN 60 MILES OF HIS HOME IN VERMONT. HIS LATEST BOOK, "WANDERING HOME," CHRONICLES HIS TRAVELS BY FOOT FROM VERMONT THROUGH THE ADIRONDACK MOUNTAINS OF NEW YORK. HE OFFERS THESE COMMENTS AS PART OF "THINK GLOBAL," PUBLIC RADIO'S WEEK OF SPECIAL COVERAGE. BACK-ANNOUNCE: THOSE WERE THE COMMENTS OF BILL MCKIBBEN, THE AUTHOR OF "THE END OF NATURE," "THE AGE OF MISSING INFORMATION," AND, MOST RECENTLY, "WANDERING HOME."