But butterfly wings are flat. How do butterflies fly? Robert Kacmarcik, Green Valley, Arizona Flat-winged insects also generate lift by using their wings as airfoils, says Robert Dudley ...

Thousands of new species are found each year. Here are three of our most recent eye-catching stories. The new species was named Hewitsonia rogerioi, or Rogério’s Hewitsonia, honoring Angolan nature ...