I loved reading this memoir, a wonderfully written story about William Kamkwamba from Malawi who built a windmill out of scraps to help his family at times of famine. And by scraps I mean blue gum trees, bicycle parts, and materials collected in a local scrapyard. I read up on his story after...

[ad] Some 10 to 15 years ago, the thought of us paying for bottled water was laughable. I remembered my reaction when seeing bottled waters making its way into the market and thought to myself, WTF? Fast forward to the current day, bottled water is now some form of necessity given the state of...