Summary:

• **What are PFAS chemicals?** PFAS are called "forever chemicals" because they don't break down in nature and can stay in the environment for a very long time. Scientists found that whales in the North Atlantic Ocean now have lower levels of these harmful chemicals in their bodies than they did before.

• **Why is this good news?** Countries around the world made rules to reduce the use of PFAS chemicals in products like non-stick cookware and water-resistant clothing. The study shows that these rules are actually working—the whales are getting healthier because there's less pollution in the ocean.