Gorilla Dies Unexpectedly

What's causing the shocking deaths of zoo animals?

Last week, Martha, a Western lowland gorilla who was the mother of six, died unexpectedly. She was 32 years old.

Martha and two of her children lived at the Gladys Porter Zoo in Brownsville, Texas. An oasis nestled in the center of the state (according to the zoo’s website), the Gladys Porter Zoo is home to some 1,600 wild animals.

The average lifespan of…