"[While] the emotion 'surprise' [maps] to a mask named 'surprised eyes,' the emotion ... and is based in San Francisco. She covers social media platforms, Silicon Valley, and the many ways ...

But Mbappe went with something that's more country-appropriate: a blue, white and red mask that covers most of the upper part of his face, and it looks like it says "KM" on it. He looks like ...

When the COVID-19 pandemic took off in 2020, so too did questions over the effectiveness of wearing a face mask to prevent the spread of the virus. Now, four years later, what does the science say?