Not seen on the Delmarva peninsula in 27 years, the endangered Hessel’s Hairstreak butterfly reveals itself in a Delaware swamp. For the first time in 27 years, the rare Hessel's Hairstreak butterfly ...

Gemstones like precious opal are beautiful to look at and deceivingly complex. As you look at such gems from different angles ...

This is the blue morpho butterfly, which has a cool alien-sounding name, but also has inspired a new biomimetic fabric that refracts light like the butterfly’s wings. It’s just one of the eco-friendly ...

In a forested region of Angola where a cliff separates the landscape, a new species of butterfly was discovered. Getty Images/iStockphoto In the forests of northwestern Angola, the canopy of trees ...