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      • Ella Nilsen
        Climate Reporter

        Ella Nilsen is a CNN reporter covering climate.

        Full Bio

      Aerial view of Nuiqsut, AK on May 28, 2019.

      Biden administration takes another step toward advancing a controversial oil drilling project in Alaska

      The All American Canal flows past the Imperial Sand Dunes near Felicity, California, U.S., December 5, 2022. REUTERS/Caitlin Ochs

      California floated cutting major Southwest cities off Colorado River water before touching its agriculture supply, sources say

      MARBLE CANYON, ARIZONA - JANUARY 1: Seen from atop the Historic Navajo Bridge the Colorado River flows toward Lees Ferry the only place within Glen Canyon where people are able to easily access the Colorado River from both sides in over 700 miles of Glen Canyon country on January 1, 2023 in Marble Canyon, Arizona. (Photo by RJ Sangosti/MediaNews Group/The Denver Post via Getty Images)

      A showdown over Colorado River water is setting the stage for a high-stakes legal battle