A video of scientists dropping ice into a really deep hole has gone viral because of the wobbly cartoon-spaceship sound the falling ice makes. Princeton University geochemist John Andrew Higgins ...

Today's Google Doodle celebrates the 214th birthday of Christian Doppler, whose discovery of the Doppler Effect now helps us track thunderstorms, study distant galaxies, and much more. Doppler was an ...

When an ambulance passes with its siren blaring, you hear the pitch of the siren change: as it approaches, the siren’s pitch sounds higher than when it is moving away from you. This change is a common ...