Ever wonder why onions make you cry? Or why lizards do pushups? Or why leaves change color in the fall? Don?t worry, you?re not alone. Acclaimed science writer and broadcaster Jay Ingram wonders the same things. After a long career of asking important questions (Does time speed up as we age? How much Neanderthal is in me? Why do some animals throw their feces?), he?s here to put our scientific quandaries to rest.