Northern pike travel through saltwater to invade freshwater in Southcentral Alaska, challenging previous assumptions.

Plants store 786 km³ water and cycle it back to the atmosphere in 5–18 days. New study reveals their critical role in the ...

What did Mars look like when it had water? From river deltas to ancient lakes, this video explores the formation of these features and the story they tell about the planet's past. Learn how NASA's Per ...

Sea lampreys abounded in all Great Lakes in 2024 after treatment was limited during COVID. But the parasitic, invasive fish ...