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Were trained to nose through this canister line—up. each can contains a sample of sweat or breath taken from a person either before or just after they'd completed a difficult stress—inducing maths problem. the task — sniff out the stressed person's sample. she's one of our study dogs. she's a three—year—old mixed breed and she's a rescue dog and she's absolutely gorgeous. this is herbert. oh, they do look kind of similar! they do, don't they? having a psychological stress response changes the way that our body is emitting odours, and dogs can detect that change. why was stress of par...

You prevent outbreaks of covid is the at schools? a new study has insights. this study looked at covid-19 rates in more than a hundred public schools in georgia. they found, when they required masks for teachers and staff, the covid-19 rates were. % lower than when they didn't. when they looked at schools that required masks for students, they couldn't find a difference. there was no statistically difference when they required masks for students. it may be that children don't get that covid that often or don't transmit it very efficiently. or maybe because the children, were told to wear a mas...