The ocean is the ultimate recycler: It takes broken ­bottles, ­tumbles them around for decades, and then spits them back as smooth, frosted sea glass. The value of these pieces, which can sell for ...

While humans possess three kinds of color-sensitive cones, birds have four. This is an Inside Science story. Hummingbirds can see colors humans can only imagine, an ability that now sheds light on an ...

The crisp, cool weather we’ve experienced recently is a remind that, yes, it is indeed Fall. But the weather we had during ...