Este recurso está disponible en español. This resource is available in Spanish. This activity is part of Science Friday’s Down to Earth program. Have you ever rinsed a bunch of grapes or a head of ...

Tiny animals like oysters, mussels, zooplankton, and insect larvae filter debris and algae to keep lakes, rivers, and seas clear.

Oysters are fun to eat because they’re delicious and celebratory and remind you of the ocean. Turns out that last part is especially true because those suckers are just fantastic at filtering out ...

While we've seen quite a few filtration systems for making polluted water drinkable, many are quite complex, or utilize costly materials. By contrast, an experimental new setup simply requires users ...