Different nations have different approaches to testing and using chemicals to see how they can cause diseases. Antonia, Laura and Jasmin look at how chemicals are tested for toxicity, how harmful substances are controlled, and whether dose limits are important. They look at asbestos, radioactive substances, and more. Fact check: Manufactured chemicals have led to an increase in childhood disease and shouldn’t automatically be presumed safe Safety data sheets for waterproofing spray and household bleach A history of bioaccumulation of mercury in fish News about banning and restricting sales of fish in some nations in relation to wastewater discharge from the Fukushima-Daichii site Statistics on global deaths per year due to asbestos exposure Statistics on deaths in the UK from asbestos exposure