"It's not only April showers that bring flowers. It's also global warming. A recent study conducted by scientists from Boston University, Harvard University, and the University of Wisconsin found that flowers are blooming earlier and earlier every year in two historical sites. Using data collected by famous naturalists and authors Henry David Thoreau and Aldo Leopold, the researchers graphed the change in flower bloom times. The 161-year-old and nearly 80-year-old data allowed them to see exactly how much the temperatures had changed. Their findings were drastic and worrisome. After comparing past bloom times with present bloom times, the researchers found that plants, such as serviceberry and nodding trillium, are blooming up to one week earlier." - Lit