Menu Close

Articles on Species

Displaying 1 - 20 of 76 articles

The male bluehead wrasse defends his group of yellow females, one of whom has to step-up and take charge if he leaves. Kevin Bryant

What we learn from a fish that can change sex in just 10 days

When a male bluehead wrasse is removed from the group he dominates, the largest female changes sex, rapidly transforming ovaries into sperm-producing testes. Molecular research shows how.
Air, water, land and wildlife are tainted with thousands of chemicals that we cannot see, smell or touch — and may not be considered a threat to wildlife. (Shutterstock)

Wildlife are exposed to more pollution than previously thought

Scientists have a new approach to understanding how pollution threatens species at risk in Canada.

Top contributors

More