<p>Life on Earth runs on a 24-hour cycle as the planet turns. Animals and plants have built-in circadian clocks that synchronize metabolism and behavior to this daily cycle. But one beetle is out of sync with the rest of nature. A new study, published Jan. 18 in <a href="http://dx.doi.org/10.1016/j.cub.2023.12.057">Current Biology</a>, looks at a beetle with a unique, 48-hour cycle. </p>