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    <loc>https://www.ecoticias.com/en/researchers-have-analyzed-136-weapons-using-carbon-14-dating-and-have-been-able-to-pinpoint-exactly-when-the-bow-and-arrow-era-began-in-north-america/31353/</loc>
    <lastmod>2026-04-27T10:36:56+00:00</lastmod>
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      <news:publication_date>2026-04-27T12:30:00-05:00</news:publication_date>
      <news:title><![CDATA[Researchers have analyzed 136 weapons using carbon-14 dating and have been able to pinpoint exactly when the bow-and-arrow era began in North America]]></news:title>
      <news:keywords>Science</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/ancient-pueblo-bow-arrow-technology.jpg</image:loc>
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  <url>
    <loc>https://www.ecoticias.com/en/they-heated-them-to-900c-1652f-for-8-hours-and-something-unexpected-happened-the-rice-husks-and-palm-fronds-barely-formed-the-dreaded-rocks-that-clog-boilers/29823/</loc>
    <lastmod>2026-04-27T17:26:44+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
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      <news:publication_date>2026-04-27T12:26:43-05:00</news:publication_date>
      <news:title><![CDATA[They heated them to 900°C (1,652°F) for 8 hours, and something unexpected happened: the rice husks and palm fronds barely formed the dreaded “rocks” that clog boilers… and Colombia might have a more reliable rural fuel than we thought]]></news:title>
      <news:keywords>Energy</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/03/rice-husks-rural-colombia-biomass-power.jpg</image:loc>
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  <url>
    <loc>https://www.ecoticias.com/en/they-found-a-giant-tooth-embedded-in-the-neck-of-a-plesiosaur-and-the-culprit-was-not-a-marine-reptile-but-a-massive-predatory-fish/31349/</loc>
    <lastmod>2026-04-27T10:24:46+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
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      <news:publication_date>2026-04-27T10:15:00-05:00</news:publication_date>
      <news:title><![CDATA[They found a giant tooth embedded in the neck of a plesiosaur, and the “culprit” was not a marine reptile, but a massive predatory fish]]></news:title>
      <news:keywords>Science</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/xiphactinus-audax-fossil-skull-teeth-smithsonian.jpg</image:loc>
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  <url>
    <loc>https://www.ecoticias.com/en/the-ai-analyzed-1974-unclassified-tracks-and-raised-some-very-troubling-questions-about-the-bird-tracks/31345/</loc>
    <lastmod>2026-04-27T10:11:28+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
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      <news:publication_date>2026-04-27T08:15:00-05:00</news:publication_date>
      <news:title><![CDATA[The AI analyzed 1,974 unclassified tracks and raised some very troubling questions about the “bird tracks”]]></news:title>
      <news:keywords>Science</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/dinosaur-footprint-fossil-isle-of-skye-ai-tracks.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/el-nino-could-return-as-early-as-may-through-july-2026-and-the-latest-official-forecasts-point-to-a-possibility-that-has-many-experts-on-alert/31332/</loc>
    <lastmod>2026-04-26T17:06:23+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-27T06:30:00-05:00</news:publication_date>
      <news:title><![CDATA[El Niño could return as early as May through July 2026, and the latest official forecasts point to a possibility that has many experts on alert]]></news:title>
      <news:keywords>Environment</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/el-nino-2026-ocean-temperature-anomaly-underwater-currents.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/they-tried-slow-down-the-advance-of-the-sahara-with-millions-of-bees-and-they-melted-at-over-70-c-however-the-solution-that-works-is-not-biology-but-geometry-on-the-gr/28230/</loc>
    <lastmod>2026-04-27T09:27:06+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-27T04:27:00-05:00</news:publication_date>
      <news:title><![CDATA[They tried to slow down the advance of the Sahara with millions of bees… and they “melted” at over 70 °C. However, the solution that works is not biology, but geometry on the ground]]></news:title>
      <news:keywords>Environment</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/02/sahara-half-moon-pits-desert-restoration-water-harvesting.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/a-pesticide-that-has-been-in-use-for-decades-may-be-causing-wild-fish-to-age-from-the-inside-out-even-at-doses-so-low-that-they-do-not-kill-the-fish-immediately/30653/</loc>
    <lastmod>2026-04-27T08:54:31+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-27T03:54:30-05:00</news:publication_date>
      <news:title><![CDATA[A pesticide that has been in use for decades may be causing wild fish to age from the inside out, even at doses so low that they do not kill the fish immediately]]></news:title>
      <news:keywords>Environment</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/safe-pesticide-levels-aging-fish-chlorpyrifos-study.jpg</image:loc>
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  </url>
  <url>
    <loc>https://www.ecoticias.com/en/the-united-states-has-never-built-anything-like-this-before-now-a-startup-wants-to-bury-a-small-nuclear-reactor-6000-feet-underground-with-a-target-date-of-july-2026/31328/</loc>
    <lastmod>2026-04-26T17:06:06+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T18:30:00-05:00</news:publication_date>
      <news:title><![CDATA[The United States has never built anything like this before: now a startup wants to bury a small nuclear reactor 6,000 feet underground, with a target date of July 2026]]></news:title>
      <news:keywords>Energy</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/underground-nuclear-reactor-borehole-deep-fission-kansas-drilling.jpg</image:loc>
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  </url>
  <url>
    <loc>https://www.ecoticias.com/en/jumbo-is-recalling-14-and-28-ounce-bags-of-frozen-green-beans-after-several-customers-reported-a-discovery-that-was-as-disgusting-as-it-was-unsettling/31325/</loc>
    <lastmod>2026-04-26T16:23:27+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T17:00:00-05:00</news:publication_date>
      <news:title><![CDATA[Jumbo is recalling 14- and 28-ounce bags of frozen green beans after several customers reported a discovery that was as disgusting as it was unsettling]]></news:title>
      <news:keywords>Trending</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/jumbo-frozen-green-beans-recall-contamination-dead-mouse.jpg</image:loc>
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  </url>
  <url>
    <loc>https://www.ecoticias.com/en/what-they-observed-over-the-course-of-90-minutes-in-the-branches-of-a-tree-in-the-midst-of-a-storm-seems-straight-out-of-a-science-fiction-novel-41-ultraviolet-flashes-invisible-to-the-human-eye-and/31320/</loc>
    <lastmod>2026-04-26T13:30:36+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
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      <news:publication_date>2026-04-26T15:00:00-05:00</news:publication_date>
      <news:title><![CDATA[What they observed over the course of 90 minutes in the branches of a tree in the midst of a storm seems straight out of a science-fiction novel: 41 ultraviolet flashes invisible to the human eye and a major unanswered mystery]]></news:title>
      <news:keywords>Science</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/lightning-storm-over-trees-ultraviolet-corona.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/nasa-observes-the-sahara-from-the-international-space-station-and-detects-a-gigantic-eye-nearly-50-kilometers-wide-whose-origin-is-not-as-cosmic-as-it-seems/30087/</loc>
    <lastmod>2026-04-26T19:12:15+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T14:12:14-05:00</news:publication_date>
      <news:title><![CDATA[NASA observes the Sahara from the International Space Station and detects a gigantic eye nearly 50 kilometers wide, whose origin is not as cosmic as it seems]]></news:title>
      <news:keywords>Science</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/03/nasa-eye-of-the-sahara-richat-structure-rings.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/twenty-two-giant-blocks-from-the-legendary-lighthouse-of-alexandria-have-been-recovered-from-the-seabed-and-this-discovery-is-rewriting-the-history-of-one-of-the-worlds-most-famous-wonders/31316/</loc>
    <lastmod>2026-04-26T13:12:21+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T12:30:00-05:00</news:publication_date>
      <news:title><![CDATA[Twenty-two giant blocks from the legendary Lighthouse of Alexandria have been recovered from the seabed, and this discovery is rewriting the history of one of the world’s most famous wonders]]></news:title>
      <news:keywords>Science</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/lighthouse-of-alexandria-stone-blocks-recovered-from-sea.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/no-one-understood-what-that-strange-green-creature-was-that-washed-up-on-a-texas-beach-on-march-7-until-they-discovered-it-was-one-of-the-rarest-turtles-in-the-world/31312/</loc>
    <lastmod>2026-04-26T12:40:53+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T10:15:00-05:00</news:publication_date>
      <news:title><![CDATA[No one understood what that strange green creature was that washed up on a Texas beach on March 7, until they discovered it was one of the rarest turtles in the world]]></news:title>
      <news:keywords>Environment</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/kemps-ridley-sea-turtles-padre-island-beach.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/the-folds-in-a-180-million-year-old-rock-hold-a-story-that-baffles-scientists/31308/</loc>
    <lastmod>2026-04-26T19:17:22+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T08:45:00-05:00</news:publication_date>
      <news:title><![CDATA[The folds in a 180-million-year-old rock hold a story that baffles scientists]]></news:title>
      <news:keywords>Science</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/morocco-atlas-mountains-ancient-rock-folds.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/astronomers-have-detected-for-the-first-time-and-in-real-time-a-violent-collision-between-two-young-planets-located-11000-light-years-away/31296/</loc>
    <lastmod>2026-04-26T18:20:48+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T06:30:00-05:00</news:publication_date>
      <news:title><![CDATA[Astronomers have detected, for the first time and in real time, a violent collision between two young planets located 11,000 light-years away]]></news:title>
      <news:keywords>Science</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/planetary-collision-exoplanet-dust-cloud-gaia20ehk-astronomy-event.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/a-study-published-on-december-17-2025-on-mangroves-in-the-colombian-caribbean-reveals-that-small-crabs-measuring-just-1-2-inches-can-accumulate-up-to-13-times-more-microplastics-than-the-mud-and-conve/31304/</loc>
    <lastmod>2026-04-26T11:18:05+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T06:18:04-05:00</news:publication_date>
      <news:title><![CDATA[A study published on December 17, 2025, on mangroves in the Colombian Caribbean reveals that small crabs measuring just 1.2 inches can accumulate up to 13 times more microplastics than the mud and convert some of them into nanoplastics]]></news:title>
      <news:keywords>Environment</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/fiddler-crabs-mangroves-colombia-microplastics-nanoplastics-study-2025.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/between-1997-and-2006-the-galapagos-islands-launched-an-operation-that-was-as-extreme-as-it-was-surprising-to-save-their-giant-tortoises-they-removed-more-than-140000-invasive-goats-using-helicopters/30664/</loc>
    <lastmod>2026-04-26T10:05:50+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-26T05:05:49-05:00</news:publication_date>
      <news:title><![CDATA[Between 1997 and 2006, the Galápagos Islands launched an operation that was as extreme as it was surprising to save their giant tortoises: they removed more than 140,000 invasive goats using helicopters, GPS, and a strategy that was as unusual as it was controversial]]></news:title>
      <news:keywords>Environment</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/galapagos-giant-tortoise-project-isabela-invasive-goats.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/germany-is-already-testing-a-power-plant-on-the-rhine-equipped-with-124-invisible-turbines-that-continues-to-operate-even-after-sunset-and-when-the-wind-dies-down/31289/</loc>
    <lastmod>2026-04-25T17:29:42+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-25T18:30:00-05:00</news:publication_date>
      <news:title><![CDATA[Germany is already testing a power plant on the Rhine equipped with 124 invisible turbines that continues to operate even after sunset and when the wind dies down]]></news:title>
      <news:keywords>Energy</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/rhine-river-hydrokinetic-turbines-germany-swarm-power-plant-energyfish.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/albert-einstein-a-scientist-speaking-to-his-son-in-1900-life-is-like-riding-a-bicycle-to-keep-your-balance-you-have-to-keep-moving/31279/</loc>
    <lastmod>2026-04-25T17:14:05+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-25T17:00:00-05:00</news:publication_date>
      <news:title><![CDATA[Albert Einstein, a scientist, speaking to his son in 1900: “Life is like riding a bicycle: to keep your balance, you have to keep moving”]]></news:title>
      <news:keywords>Trending</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/albert-einstein-portrait-equations-relativity-blackboard.jpg</image:loc>
    </image:image>
  </url>
  <url>
    <loc>https://www.ecoticias.com/en/cannibalism-is-decimating-blue-crab-larvae-but-shallow-waters-still-offer-them-a-chance/31271/</loc>
    <lastmod>2026-04-25T16:41:58+00:00</lastmod>
    <news:news>
      <news:publication>
        <news:name>ECOticias.com</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:publication_date>2026-04-25T15:00:00-05:00</news:publication_date>
      <news:title><![CDATA[Cannibalism is decimating blue crab larvae, but shallow waters still offer them a chance]]></news:title>
      <news:keywords>Environment</news:keywords>
    </news:news>
    <image:image>
      <image:loc>https://www.ecoticias.com/en/wp-content/uploads/2026/04/blue-crabs-harvest-basket-chesapeake-bay-catch.jpg</image:loc>
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  </url>
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