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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Colorado River | smithsonianmag.com</title><link>https://www.smithsonianmag.com/rss/tag/colorado-river/</link><description>RSS feed for Colorado River</description><atom:link href="https://www.smithsonianmag.com/rss/tag/colorado-river/" rel="self"/><language>en</language><lastBuildDate>Fri, 17 Apr 2026 19:11:08 +0000</lastBuildDate><item><title>Scientists Still Don't Know How or When the Grand Canyon Formed. New Research May Hint at Its Ancient Origins</title><link>https://www.smithsonianmag.com/smart-news/scientists-still-dont-know-how-or-when-the-grand-canyon-formed-new-research-may-hint-at-its-ancient-origins-180988570/</link><description>Researchers say the ancestral Colorado River formed an ancient lake in northern Arizona roughly 6.6 million years ago, which spilled out westward onto the landscape that would eventually become the Grand Canyon</description><pubDate>Fri, 17 Apr 2026 19:11:08 +0000</pubDate><guid>https://www.smithsonianmag.com/smart-news/scientists-still-dont-know-how-or-when-the-grand-canyon-formed-new-research-may-hint-at-its-ancient-origins-180988570/</guid><enclosure length="2787127" type="image/jpeg" url="https://th-thumbnailer.cdn-si-edu.com/wH2TdauR8zGJyuqx_yH0GEl7Jxg=/420x240/filters:focal(1500x1279:1501x1280)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/b9/ba/b9ba262b-52e7-4aa7-ac9b-a7dd749d5a9a/47006412314_a98ecd3fa3_o.jpg"/></item><item><title>Trove of Fossils Uncovered in the Grand Canyon Offers a Rare Glimpse Into Cambrian Life, With Toothy Worms and Slug-Like Mollusks</title><link>https://www.smithsonianmag.com/smart-news/trove-of-fossils-uncovered-in-the-grand-canyon-offers-a-rare-glimpse-into-cambrian-life-with-toothy-worms-and-slug-like-mollusks-180987042/</link><description>Rocks found along the Colorado River in Arizona turned out to contain fossilized fragments of soft-bodied creatures, suggesting the site may have been an “evolutionary hotbed”</description><pubDate>Tue, 29 Jul 2025 17:27:23 +0000</pubDate><guid>https://www.smithsonianmag.com/smart-news/trove-of-fossils-uncovered-in-the-grand-canyon-offers-a-rare-glimpse-into-cambrian-life-with-toothy-worms-and-slug-like-mollusks-180987042/</guid><enclosure length="1161875" type="image/jpeg" url="https://th-thumbnailer.cdn-si-edu.com/DSOqe86zJ2939qInVBK3plxWLk4=/420x240/filters:focal(1440x1536:1441x1537)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/db/3f/db3fa5d8-af3f-4ded-9e2f-090519eb9138/grand-canyon-was-a-gol.jpg"/></item><item><title>Las Vegas Is Going All In on Its Water Conservation Plan</title><link>https://www.smithsonianmag.com/innovation/las-vegas-going-all-in-water-conservation-plan-180983974/</link><description>As the Southwest dries, can a city notorious for excess find a way to survive with less?</description><pubDate>Tue, 26 Mar 2024 12:00:00 +0000</pubDate><guid>https://www.smithsonianmag.com/innovation/las-vegas-going-all-in-water-conservation-plan-180983974/</guid><enclosure length="1012619" type="image/jpeg" url="https://th-thumbnailer.cdn-si-edu.com/4kUXy8oQdx2xvcckztKaU43cyXU=/420x240/filters:focal(800x583:801x584)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/28/e5/28e5eb74-424d-4c58-980b-dc85374eef93/aprmay2024_f03_lasvegaswater.jpg"/></item><item><title>Citizen Scientists Document a Recovering Colorado River</title><link>https://www.smithsonianmag.com/science-nature/citizen-scientists-document-a-recovering-colorado-river-180983532/</link><description>The Returning Rapids Project charts a resurgent waterway and its surrounding ecosystems</description><pubDate>Thu, 25 Jan 2024 13:00:00 +0000</pubDate><guid>https://www.smithsonianmag.com/science-nature/citizen-scientists-document-a-recovering-colorado-river-180983532/</guid><enclosure length="576601" type="image/jpeg" url="https://th-thumbnailer.cdn-si-edu.com/8ljgK2bINIf-JgUuq73j4SjGpw0=/420x240/filters:focal(800x602:801x603)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/38/30/38302765-587b-45ae-bae6-592692a90729/main_benson-with-photos_web.jpg"/></item><item><title>Hear What’s Happening to the Colorado River From a Photojournalist Who Has Spent His Entire Life Alongside It</title><link>https://www.smithsonianmag.com/science-nature/hear-whats-happening-to-the-colorado-river-from-a-photojournalist-who-has-spent-entire-life-alongside-it-180982685/</link><description>In the latest episode of “There’s More to That,” learn about the Western waterway that affects the lives of everyone in the United States</description><pubDate>Thu, 10 Aug 2023 11:00:00 +0000</pubDate><guid>https://www.smithsonianmag.com/science-nature/hear-whats-happening-to-the-colorado-river-from-a-photojournalist-who-has-spent-entire-life-alongside-it-180982685/</guid><enclosure length="1971193" type="image/jpeg" url="https://th-thumbnailer.cdn-si-edu.com/Bd08f8dmjvM1cBhDQMSGtMhCOjI=/420x240/filters:focal(700x527:701x528)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/06/da/06da6edb-e0c9-45af-bc82-fe746f07108d/smithmag-podcast-ep3-colorado-article.jpg"/></item></channel></rss>