"You might see them as tiny threads or lines inside the eye. They're relatively common, especially in certain breeds," a vet ...

Excitons—bound pairs of electrons and an electron hole—are quasiparticles that can arise in solids. While so-called "bright" ...

These short scary quotes from famous movies and books will give you goosebumps. We've rounded up creepy, dark and disturbing sayings on life, death and more.