アメリカ内務省さんのインスタグラム写真 - (アメリカ内務省Instagram)「You don't need to leave Earth's orbit to feel like you're on another planet. Yellowstone National Park in #Wyoming has over 10,000 steaming and bubbling #geysers and hot springs that feel otherworldly. But what causes the hot spring's brilliant coloration? It's all thanks to the heat-loving bacteria called thermophiles—"thermo" for heat, "phile" for lovers 🔥. These microscopic organisms survive and thrive in places like the Grand Prismatic Spring, the largest hot spring in the park. Be sure to follow the rules and stay on the boardwalk, take the #YellowstonePledge and enjoy the amazing geologic and hydrothermal features of this special place. Photo by Jim Peaco, National Park Service.」8月8日 9時10分