America's most famous geyser Old Faithful in Yellowstone National Park erupts every 1 to 1.5 hours.

Green iguanas live in a large cage outdoors.

Karajan Conducting Beethoven's 5th Symphony. Part 1 (Movements 1 and 2) Very old and rare film, no longer in print, recorded in 1966.

Karajan Conducting Beethoven's 5th Symphony. Part 2 (Movements 3 and 4) Very old and rare film, no longer in print, recorded in 1966.

A butterfly emerges from its chrysalis in real time. See it climb out and the wings start to unfold.

Time lapse movie of mold growing in a tea cup. The movie correspond to about 2 weeks of real time.

A quick and easy way to organize your classroom! It's just a few folders, that's all!

Dating back to the 1880s, Boston Chinatown is one of the oldest continuous residential Chinatown communities in the U.S., a little known fact not adequately celebrated in Boston's history. This piece covers the arrival of the first Chinese immigrants in New England, brought in to break a strike...

Neil Chin recalls Chinatown during the Depression, when bootlegging was a form of economic survival. He vividly recounts his encounter, at nine years of age, with police who arrived to break up his mother’s moonshine distillery. Using a sensationalistic old-time newsreel aesthetic, the video...

Every school year teachers worry that they are not prepared to leave their classroom for a day. Put these 10 things into a folder and you can rest easy! Veteran teachers share their experience.