An ominous green sky is often associated with severe weather, but not every storm causes the sky to change colors.

After a brutal spring of toxic algae blooms turning sea lions into sick, snarling seaside hazards, anxious beachgoers can ...

They’re allowing toxic blue-green algae—a plant-like type of bacteria—to flourish, putting people and our furry friends in harm’s way. In a TikTok that has amassed nearly 8 million views ...

Two Denver area lakes are closed indefinitely after health officials found toxic levels of blue-green algae in the water. Related Articles Colorado wolves extend territory toward state’s ...