Katarina Zimmer’s Contributions:
Researchers See Signs of Chronic Stress in Polar Bears’ Blood
Abnormally long fasts linked to melting sea ice may be pushing polar bears to their limits.
Oct 28, 2020 | 550 words, about 2 minutes
What Dolphin Whistles Tell Us About Grief
A dolphin carrying a dead calf made whistles that were longer and more complex than normal.
Sep 13, 2018 | 600 words, about 3 minutes