Algae are organisms that get their energy from the sun and live in aquatic and marine environments. Some types of algae are small, single-celled organisms. Different factors such as light, temperature, and available nutrient levels can trigger some types of algae to produce toxins. Harmful algal blooms are overgrowths of toxin-producing algae in natural bodies of water, such as oceans, lakes, and rivers. These toxins can cause serious harm to people, fish, and other parts of the ecosystem. In this podcast, hear more about the adverse impacts of toxins from harmful algal blooms on human health, ecosystems, and the economy. In addition, learn how scientists are exploring the use of toxins and other chemicals released by these algae to treat certain diseases.