Meteorologist Edward Lorenz has died. He laid the foundations for the field of scientific study called chaos theory. He famously suggested that a butterfly flapping its wings in Brazil could ...

Katy Perry has had her work cut out for her rebuilding her reputation as a blockbusting pop star. After a year of ...

You know the old theory about how a butterfly flapping its wings in New Mexico can, through chaos theory, help lead to a hurricane in China? In this case, the butterfly was in Milwaukee. And the ...

Like a floating exclamation point, a brushstroke on the breeze, a butterfly dances by us, eager to move onto the next bit of milkweed, or flowery front yard, or lush neighborhood. Stream Los Angeles ...

It's not easy to see the orange and black spotted regal fritillary butterfly if you live in the Eastern U.S. It used to be common across much of the country, and is still found in the Midwest. But ...

An injured Monarch butterfly flies again after a delicate wing transplant. Watch the rescue video that’s touching hearts online.