The moderate Iranian presidential candidate Masoud Pezeshkian has expressed cautious criticism of the repressive measures used to enforce Iran’s headscarf laws. Today, women are penalized because their clothing does not comply with the regulations, the former health minister said in an interview published on Tuesday in the newspaper Hammihan. “Were we to blame for not educating them properly, or are …

Fact checked by Nick BlackmerFact checked by Nick Blackmer Key Takeaways Brushing your teeth too hard or too often can wear down tooth enamel, leading to sensitivity and pain, and it can also cause receding gums by exposing the root area. It’s best to brush between two and three times per day, for two whole minutes, using a soft-bristle brush …

Winters on the Great Lakes are harsh – so much so that the scientists who work there often focus on the summer months, when tiny microbes at the base of the food chain were thought to be most productive. However, emerging research is changing our understanding of these winter ecosystems and shining a light on a vibrant world of winter …