More jobs, more recreational opportunities and new tourism infrastructure for Southern Nevada could be blown away by the butterfly effect. Part of chaos theory holds that an event as seemingly ...

A monarch butterfly (Dannaux plexippus) flaps its wings in Piedra Herrada Sanctuary, Mexico. Might this start a chain of events that results in a tornado in Texas? Photograph by Jaime Rojo In 1961, ...

Of all the abductions, this one is different.