How are living things different from non-living things? We don’t know anything about what alien life forms might look like ...

Turn to the front of a physical dictionary or look under the “Help” section of an online dictionary, and you’ll find ...

From Harry Potter to Super Mario Bros. to Frankenstein’s monster, Universal Orlando Resort is pulling out all the pop culture ...

We know the universe is expanding ... of a cosmological constant or something even weirder. By keeping the definition of dark energy broad, we’ve also kept an open mind for other explanations.