The Yellowstone region was known for millennia by Indigenous people, who would frequent the area in search of game and other resources—they had been in the area for at least 11,000 years! Obsidian from the region was an especially prized commodity, and artifacts made from obsidian taken from Yellowstone’s numerous lava flows have been found as far east as the Ohio River Valley.

President Biden on Tuesday captured a poignant chapter of U.S. history when he designated the Emmett Till and Mamie Till-Mobley National Monument, which protects three historic sites in Illinois and Mississippi that were central to Emmett Till’s racially motivated murder, the acquittal of his murderers, and the subsequent activism by his mother, Mamie Till-Mobley, that helped catalyze the Civil Rights Movement.

After rising for a few months, Lake Powell at Glen Canyon National Recreation Area in Utah seems to be beginning to drop.

Kīlauea’s activity from 2018 until now has been compared to cycles of summit collapse and refilling prior to 1924. However, Kīlauea also exhibited similar behavior during the 1967-68 Halema‘uma‘u eruption.