Water, water, everywhere, but pollution is a major problem. Scholars design a filtration device or process that removes dirt and other particles from water. They use various household objects such as marbles, cotton balls, or coffee...

Soil pollution has a longer reach than may seem possible. A video presentation demonstrates how a seemingly isolated soil contamination spreads and even reaches waterways. The lesson demonstrates how scientists conduct porosity tests...

Our relationship with toxins is, well, a little toxic. Explore how harmful substances work their way throughout the environment with a video from an expansive biology playlist. Topics include DDT and mercury, trophic levels, and water...

Chemistry to the rescue! Viewers of an informative video in the ACS Reactions series see how chemistry provided the proof of lead pollution in Flint, Michigan. They learn that there is no actual law that limits the amount of lead in tap...

Contrary to popular belief, recycling is not always the best option. A video lesson discusses the limitations of recycling. Viewers examine disadvantages of recycling in different scenarios.

How safe is the drinking water you have access to? Colors, smells, and other factors may lead you to finding out if your water is safe. Watch a video that explains the ways water becomes filtered and ways to know when water is contaminated.

Fracking. The mere mention of the word invites controversy. Before joining the debate find out just what is involved in hydraulic fracturing with a short video that examines the technology involved in extracting natural gas found...

Despite government regulations and improved housing quality, lead poisoning is still an issue today. But what are the implications of lead exposure to a person's brain and neural activity? Learn more in a video that uses animation to...

If less than 1% of Earth's freshwater is available for use, and people are constantly using it up, what's being done to save it? This is the focus of a video that discusses the human impact on the hydrosphere.

In this video from WOSU Columbus, learn about the soil and water in wetland ecosystems and the chemical interactions that enable wetlands to cleanse themselves. [0:55]

This video segment from a WPSU documentary Liquid Assets connects public health to the availability of clean and safe drinking water and elaborates on the threats our bodies face due to increasing kinds and quantities of pollutants.

Figuring ways to clean up contaminated waters is a huge challenge. But luckily, a simple piece of plastic that mimics fish fat can help! [3:05]

NBC Learn and the National Science Foundation explore the threats and challenges to our most vital natural resource.

This video segment adapted from the National Film Board of Canada explores how the Inuit people have adapted their traditions and ways of life to changing environmental realities. The video features archival footage and interviews in...

In this video from Common Ground and Cleaner Water, Tribby Vice, a Kentucky farmer, talks about the changes he has made on his farm to protect the water quality of the stream running through his property and the watershed in which he...

In this video, a high school teacher and her students construct and install a Hester-Dendy sampler to collect macroinvertebrates. Learn how macro invertebrates can be an indicator of water quality. [3:03]