Add Yahoo as a preferred source to see more of our stories on Google. A monarch butterfly (Dannaux plexippus) flaps its wings in Piedra Herrada Sanctuary, Mexico. Might this start a chain of events ...

Small changes can have incredibly large and unintended consequences, whether for good or for ill. And no matter how smart you (think you) are, there’s absolutely no way that you can predict all of the ...

In science, there has been a concept called the "butterfly effect" for many decades - when a completely random and seemingly insignificant impact as a result of subsequent situations has a key ...

In 1961, MIT meteorologist Edward Lorenz was inputting numbers into a weather prediction program. His model was based on a dozen variables, the value of one being .506127. When he ran the model again, ...