Experts aren't sure what's causing rise in fatalities, though signs point to bigger sales of larger vehicles
                                
                                
                                    (Newser) -
                                    Alyssa Milligan was someone who intuitively knew when another person needed help, encouragement, or a kind word. Although she was new to Tennessee, the 23-year old physical therapy student, whose mother called her "Sweet Alyssa," had already made many close connections, especially within the tight-knit cycling community around...