You have followed their adventures for the past few years in reporting in The Post-Searchlight, now their treks across the world are in book form. Henry and Barbara Intili of Bainbridge have put all their trekking adventures in book form, and these two travel junkies will be at the Book Nook this afternoon for a book signing. If you enjoyed their adventures reading about them in The Post-Searchlight, now here they are in one large edition. “Travel Junkies” is billed as “An Older Couple from Georgia Explores the World with Backpack and Canoe.” For more information on the book, you can visit their Web site at www.henryintili.com. Travel with Henry and Barbara as they lose their backpacks, fall out of canoes, freeze in Alaska, dehydrate in Utah and get lost in rainstorms, eat whale in Iceland, flirt with hypothermia crossing glacial rivers and find hospitality and friendliness everywhere they go. The book signing is Saturday afternoon from 1 p.m. to 4 .m.