Walking Archive on MSN

What happens when classic warbirds take flight again?

Historic military aircraft return to the sky in a compilation filled with powerful engine sounds, impressive flyovers, and ...
earth

Birds around the world build their songs from the same eight sounds

A dawn chorus sounds like hundreds of songbirds, each one singing something different. Nearly all of them are working from the same eight sounds. Those eight include trills, whistles, harsh notes with ...