This video observes traffic on Portland, Oregon's Steel Bridge, raising questions about crude oil transport in urban areas. It urges citizens to challenge leaders on the risks of such movements.

This video observes traffic on Portland, Oregon's Steel Bridge, raising questions about crude oil transport in urban areas. It urges citizens to challenge leaders on the risks of such movements. Produced by Ruth Ann Barrett for her PDXDowntowner YouTube Channel, published April 2, 2015.

For additional context, The New York Times documentary, 'A Danger on the Rails,' addresses similar issues in Albany, New York. This piece is part of the EarthSayers.tv 'High Risk Energy Alternatives' collection, available here. Published April 22, 2015.

Greenland's vast ice sheet, covering 80% of the island and two miles thick, serves as the world's largest natural laboratory. By studying minerals and gases trapped in ice cores, glaciologists

Greenland's vast ice sheet, covering 80% of the island and two miles thick, serves as the world's largest natural laboratory. By studying minerals and gases trapped in ice cores, glaciologists unravel ancient mysteries—like past temperatures or the disappearance of the Norse—and gain critical insights into the future of climate change.

Journalist Jon Gertner explores this topic in his book, "The Ice at the End of the World." Purchase it here: https://amzn.to/2RtLtwY

For more on Greenland's ice and climate change, visit BigThink.com: https://bigthink.com/videos/greenlands-ice-a-trip-back-in-time-to-see-the-future-of-climate-change