Following is a transcript of the video. These rotating orbs are alive. Each one is a colony of hundreds of cells which work together to form the lifeform volvox. Volvox is a resident of Brooklyn. But ...

Under the microscope a drop of pond scum can give hours of delightful study. What feels between the fingers like slime is, microscopically, an open lake crowded with queer vegetable and animal life.

I have a garden pond that suffers from “pea-soup” algae. A thunderstorm recently flooded the nearby road, overflowing into my garden and the pond. The next morning the algae had gone. What was in the ...