Instructional Video5:39
SciShow

To Save Sinking Cities, Just Add Water

12th - Higher Ed
It's more than climate change putting coastal cities at risk of catastrophic flooding. Subsidence, or sinking, affects cities as they pump out groundwater to use. The solution might be as simple as putting it back.
Instructional Video2:44
MinuteEarth

We're Oversalting Our Food, And It's Not What You Think

12th - Higher Ed
Want to learn more about the topic in this week's video? Here are some keywords/phrases to get your googling started: soil salinity - when soils have high salt levels that have adverse effects on plants
Instructional Video0:42
Curated Video

Denitrification

6th - 12th
The process by which nitrate compounds in the soil are converted to free nitrogen in the atmosphere. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
Instructional Video0:42
Curated Video

Metamorphism

6th - 12th
The transformation of rocks beneath the Earth's surface through heat and pressure, and the presence of dissolved minerals in hot groundwater. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
Stock Footage0:15
Getty Images

Irrigation

Pre-K - Higher Ed
Irrigation
Stock Footage0:11
Getty Images

Fracking and Thunderheads HD

Pre-K - Higher Ed
Men work on a Fracking Rig as thunderheads build in the background. HD 1080
Stock Footage0:29
Getty Images

Protesters Listen to Speeches Against Fracking

Pre-K - Higher Ed
Protesters Listen to Speeches Against Fracking at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:17
Getty Images

Environmentalists Protest Fracking

Pre-K - Higher Ed
Environmentalists Protest Fracking at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:09
Getty Images

Fracking Tower

Pre-K - Higher Ed
Fracking rig for the production of natural gas. HD 1080
Stock Footage0:27
Getty Images

Environmentalists March in Slow Motion

Pre-K - Higher Ed
Environmentalists March in Slow Motion at Rally Against Fracking at the US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:23
Getty Images

Demonstrators March Against Fracking

Pre-K - Higher Ed
Demonstrators March Against Fracking at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:21
Getty Images

Environmentalists with Anti-Fracking Banner

Pre-K - Higher Ed
Environmentalists with Anti-Fracking Banner at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:17
Getty Images

Protestors March Against Fracking

Pre-K - Higher Ed
Protestors March Against Fracking at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:09
Getty Images

Anti-Fracking Sign at Rally

Pre-K - Higher Ed
Anti-Fracking Sign at Rally at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:11
Getty Images

Environmentalists Hold Signs While Watching Speech

Pre-K - Higher Ed
Environmentalists Hold Signs While Watching Speech at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:16
Getty Images

Protesters Take Aim at Governor Cuomo

Pre-K - Higher Ed
Protesters Take Aim at Governor Cuomo at Anti-Fracking Rally at the US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:13
Getty Images

Taking water from a well

Pre-K - Higher Ed
Taking water from a well with a rural setting
Stock Footage0:16
Getty Images

Taking water from a well

Pre-K - Higher Ed
Taking water from a well with a rural setting
Stock Footage0:12
Getty Images

Fracking Before The Storm HD

Pre-K - Higher Ed
A natural gas fracking rig on the prairie. HD 1080
Stock Footage0:08
Getty Images

Fracking Oklahoma Closeup

Pre-K - Higher Ed
Fracking Rig with multiple holding drums.
Stock Footage0:16
Getty Images

Fracking Sunlight

Pre-K - Higher Ed
Fracking Rig stands tall as native grasses sway and clouds play as the sunsets.
Stock Footage0:10
Getty Images

Natural Gas Fracking Tower HD

Pre-K - Higher Ed
Fracking rig on the open prairie. HD 1080
Stock Footage0:08
Getty Images

Demonstrators Rally Against Fracking

Pre-K - Higher Ed
Demonstrators Rally Against Fracking at US Capitol on July 28, 2012 in Washington, DC (Footage by Getty Images)
Stock Footage0:10
Getty Images

Fracking Dusk

Pre-K - Higher Ed
A Fracking Rig twinkles at dusk.