AUSTIN (KXAN) — This month there will be a once-in-a-civilization sight: a green comet named C/2022 E3 (ZTF) approaching Earth. The comet last passed through our solar system a little more than 50,000 ...
Scientists are aware of planetary boundaries—a series of climate change thresholds that, once crossed, could cause a cascade of negative environmental effects. Now, scientists are developing a ...