Area of Focus: Marine

Researchers worry it points to underlying health problems in the struggling population

As boat traffic increases, it poses a greater threat

The discovery offers a new understanding of how cougar populations may be connected

Researchers found the virus is usually severe in mammals

Focusing on the breeding grounds may not be enough

Species like cottonmouths and Burmese pythons sometimes turn up on beaches

Male humpbacks increase their volume when the wind is noisy, but not around noisy boats

Broader diets are making for bigger males