How to Spot a Fake Mask

If there’s one simple technology that has come to the forefront during the coronavirus pandemic, it’s the face mask. Special masks called respirators are designed to prevent doctors and nurses from catching the virus when they treat infected people. But not all respirators do what they’re labelled to. Fakes and shoddy products abound. And you can’t always tell how many particles a mask can filter just by looking at it. Naomi Kresge reported on how you catch a fake mask – and the lengths one German company is going to, to fight the problem.See omnystudio.com/listener for privacy information.

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For much of human history, we’ve turned to diets to lose weight and improve our health. But it’s mostly been in vain. No matter how much the number on the scale drops begins to go down, chances are that the weight will come back. That’s just what the science says. But when it comes to weight, the facts just don’t seem to matter. Losing It, a new series from Bloomberg’s Prognosis, looks at how we got weight loss so wrong — and whether there’s a better way forward.