Drought Is Threatening Hydropower in the Southwestern US
If water levels in reservoirs around the region get much lower, the dams they feed into will no longer be able to produce energy.
If water levels in reservoirs around the region get much lower, the dams they feed into will no longer be able to produce energy.
Vessels from more than 1,500 ports have visited the region since 2014. Each one is a threat to introduce invasive species.
The Cretaceous–Paleogene extinction killed 75 percent of all species—and prompted a snakesplosion of biodiversity.
Plant fossils from Colombia reveal the forests of the Cretaceous period were sparser and less humid than their modern-day counterparts.