Apple Watch Series 6 review

When it comes to smartwatches, it’s Apple against the world. It’s not that there aren’t plenty of other products to choose from — it’s more that the company has just… Read more »

Herd immunity, explained

Once the herd immunity threshold is reached, the virus just doesn’t go away. | arthobbit/Getty Images/iStockphoto There are two ways to reach herd immunity for Covid-19: the slow way, and… Read more »