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Cheryl Katz

Cheryl Katz writes about the environment, with a special interest in the Arctic.

Southern rockhoppers fearlessly approach the camera at Murrell Farm in the Falklands. The birds’ features include their spiky crests, which resemble wild eyebrows.

Rockhopper Penguins’ Athleticism Makes Them the Daredevils of the Animal World. Will a Warming Climate Slow Them Down?

A visit to the Falkland Islands, where the fearless seabirds navigate the rugged topography with tenacious spunk, shows the new challenges they face

A seal catches a salmon off the coast of Washington State. Scientists are working to determine how much salmon the seals eat.

Salmon in the Pacific Northwest Are Facing a New Threat: Booming Populations of Seals and Sea Lions

The mammals’ return to the region represented a conservation success story, but their appetite for endangered fish is upsetting the balance of a delicate ecosystem

Svalbard reindeer graze during an early snowfall. If temperatures rise again, food may be trapped under ice during a critical time for packing on winter pounds.

The World’s Smallest Reindeer Get Their Day in the Sun

On Norway’s Svalbard archipelago, a rare animal is thriving—for now

Íris Dröfn Guðmundsdóttir (left) and her cousin Anton Ingi Eiríksson release pufflings from the Hamarinn sea cliff on the Icelandic island of Heimaey.

An Icelandic Town Goes All Out to Save Baby Puffins

Kids and senior citizens alike rally to rescue beloved young seabirds that have lost their bearings