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The Finnish tradition of a sauna followed by a plunge into icy water or a roll in the snow is spreading around the world. What does science say about the claimed health benefits?

Mosquitoes should be given malaria drugs to clear their infection so they can no longer spread the disease, say US researchers.

A new test has been developed that reduces the time it takes to diagnose types of brain tumours from weeks to just hours, researchers say.

Google is introducing a new artificial intelligence (AI) mode that more firmly embeds chatbot capabilities into its search engine, aiming to give users the experience of having a conversation with an expert.