Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Researchers are suggesting seven energy-intensive separation processes they believe should be the top targets for research into low-energy purification technologies. Beyond cutting energy use, ...

Target 11 has obtained internal emails from the Pittsburgh Water and Sewer Authority that shed new light on the decision to change a chemical in the agency's water system that led to higher levels of ...

Chemicals released by red algae may be preventing collapsed kelp forests along Maine's southern coast from recovering, a new study finds. "Once kelp forests are lost, it's really hard to get them back ...