In our top science stories this week: Writer Ed Cara looks back at the terrifying prion disease known as Mad Cow; researchers discover seamounts taller than the Burj Khalifa; and the journal that published a horrifying diagram of ‘rat dck’ explains what went wrong. —Rose Pastore
Here’s a mind-blowing geography fact: The northernmost part of Brazil is closer to Canada than it is to the southernmost part of Brazil. Facts like this partly speak to truly unusual geographical features of Earth (like Brazil’s massive land area) but also to how warped our perception can be of our own home. We’ve…