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 ...

New York City ponds are teeming with trillions of bacteria, fungi, and other microbes that are invisible to the naked eye. ... They use the spirogyra like a highway to get around.

MANILA, Philippines — The Muntinlupa City Health Office (CHO) has assured residents that the ongoing algal bloom in Laguna de Bay does not pose a threat to public health.