This matters because intonation (the rise and fall of speech that conveys emotion, emphasis, and intent) can flip meaning ...

Simple science experiments suitable for home learning show hands-on activities that illustrate basic principles.

Growing up, we all had to do all kinds of science projects in school. For Baby Boomers, here are several classic science projects that just about everyone had to do at least once.

You can't see, feel, hear, taste or smell them, but tiny particles from space are constantly raining down on us.