Bear blogging is clearly the it-trend of summer 2008. So, lucky for us, an adorable baby bear story unfolded in our own back yard yesterday. A 30-pound black bear cub climbed a tree in a heavily populated Frederick, MD neighborhood yesterday, where he hung around for almost 5 hours. NBC4 has video of him being generally adorable and licking a lot. He finally came down of his own accord, spotted an apple in the yard…