The study was one of several that assessed the effects of climate change on three species of butterflies whose populations are declining.

The butterfly appears to be a hybrid between two known tiger swallowtail species — P. glaucus and P. canadensis — but because ...

The wolf’s life will change on a sweltering September day, but she doesn’t know it yet. All she knows is this: She is kept in ...

I remembered this experience vividly as I read Imani Perry’s new book, Black in Blues: How a Color Tells the Story of My ...