"Run to Save a Watershed" is a documentary set in Chile's Central Andes, where the Maipo River sustains Santiago's 7.1 million residents and a vibrant ecosystem. However, the Alto Maipo

"Run to Save a Watershed" is a documentary set in Chile's Central Andes, where the Maipo River sustains Santiago's 7.1 million residents and a vibrant ecosystem. However, the Alto Maipo hydroelectric project threatens this vital waterway.

Trail runner and activist Felipe Cancino runs 120 kilometers, tracing the project's pipelines, to expose its devastating impact. He reveals how it alters the river, displaces communities, endangers Santiago's water supply, and permanently damages the natural environment. The film underscores the true value of this ecosystem against the high costs of current development.

Will Chile choose a different path? Take action to protect the Maipo forever: Patagonia.com/RunTo

Geothermal energy, despite lower carbon emissions than coal, is not benign. Projects like Nevada's proposed Baltazor site highlight significant environmental and social costs. Geothermal

Geothermal energy, despite lower carbon emissions than coal, is not benign. Projects like Nevada's proposed Baltazor site highlight significant environmental and social costs. Geothermal development leads to habitat destruction (e.g., in Kenya and for Nevada's Dixie Valley toad) and violent evictions of indigenous communities.

Drilling releases toxic elements like mercury, arsenic, and boron into groundwater. Facilities also cause air pollution, including sulfur dioxide and hydrogen sulfide, contributing to acid rain and health issues, as seen in Iceland. Moreover, "enhanced geothermal systems" (EGS) utilize fracking technology, injecting high-pressure slurries that can poison groundwater and induce earthquakes, mirroring problems in the oil and gas industry.

Human objects in space are creating dangerous clutter. MIT Assistant Professor Danielle Wood advocates for sustainable space technology, stressing the need to respect both people and the

Human objects in space are creating dangerous clutter. MIT Assistant Professor Danielle Wood advocates for sustainable space technology, stressing the need to respect both people and the environment in future missions. This approach is crucial for managing the "industrial waste" accumulating beyond Earth.

One promising solution involves a wax-based fuel for satellites, made from beeswax and candle wax. This less toxic and more affordable alternative would help bring objects closer to Earth for safe deorbiting and destruction, offering a sustainable way to address space debris.

Watch the newest video from Big Think: https://bigth.ink/NewVideo. Learn skills from top minds at Big Think Edge: https://bigth.ink/Edge. Read the full transcript: https://bigthink.com/videos/sustainable-space-tech.

The lower Snake River dams are pushing salmon to extinction, threatening orcas, breaking tribal treaties, and harming communities in the Northwest. Removing these four dams would enable the

The lower Snake River dams are pushing salmon to extinction, threatening orcas, breaking tribal treaties, and harming communities in the Northwest. Removing these four dams would enable the largest river restoration in history, restoring over 5,000 miles of free-flowing habitat for millions of salmon.

Urgent action is needed for better infrastructure and a healthier ecosystem. Tell Congress to restore the lower Snake River and save salmon and orcas before it's too late. Learn more and act: https://dfnd.us/3s1aJvh

Researchers have released stunning new footage of "El Bonito," a juvenile male jaguar, just three miles from the U.S.-Mexico border in Sonora, Mexico. This sighting suggests a female jaguar may

Researchers have released stunning new footage of "El Bonito," a juvenile male jaguar, just three miles from the U.S.-Mexico border in Sonora, Mexico. This sighting suggests a female jaguar may live closer to the United States than previously believed, indicating potential breeding activity in the region.

El Bonito, like at least seven other male jaguars detected in the U.S. over the past 25 years, could eventually cross the border from Sonora. The last known female jaguar north of the border was killed in Arizona in 1963.

The video was captured by Ganesh Marin, a University of Arizona Ph.D. student and National Geographic Explorer, who leads this joint research project involving multiple institutions.

In its final weeks, the Trump administration is rapidly constructing border wall miles. This effort involves bulldozing protected public lands, dynamiting mountains, and destroying habitats vital

In its final weeks, the Trump administration is rapidly constructing border wall miles. This effort involves bulldozing protected public lands, dynamiting mountains, and destroying habitats vital for endangered species.

President-elect Joe Biden pledged "Not Another Foot" of wall would be built under his leadership. He is expected to fulfill this promise immediately upon taking office on January 20, permanently halting further construction.

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