POLAR BEAR APPRECIATION: If you’ve heard about global warming affecting the polar bears, you’ll want to head down to the Point Defiance Zoo for Bear Awareness Week. Learn more about the plight of the polar bear and watch the resident polar bears, Blizzard, Glacier, Kenneth and Boris, frolic. 9:30 a.m.- 5 p.m. // Point Defiance Zoo // $11 (adults) HUNGRY: In the not-so-starved neighborhood of Ravenna, author Mark Winne reads from his book, Closing......