Toxic chemicals found in oil spills and wildfire smoke detected in killer whales. PAHs are a type of chemical found in coal, oil and gasoline which research suggests are carcinogenic, mutagenic, and have toxic effects on mammals

Toxic chemicals found in oil spills and wildfire smoke detected in killer whales. PAHs are a type of chemical found in coal, oil and gasoline which research suggests are carcinogenic, mutagenic, and have toxic effects on mammals