When the wind blew from the direction of the colony, ammonia levels spiked, sometimes reaching 1,000 times above normal ...

A dozen Humboldt penguins have moved into a new exhibit called “Penguin Point.” The zoo is one of only 24 facilities in North America to care for this species. The “quirky, sun-loving” penguins were ...

The researchers further demonstrated that the ammonia kicks off an atmospheric chain reaction. Out at sea, tiny plantlike ...