MIT Technology Review Explains: Let our writers untangle the complex, messy world of technology to help you understand what's coming next.You can read more from the series here. Eight passengers aboard a Dutch-flagged cruise ship have contracted a type of hantavirus, a rare virus transmitted by rats. Three of them have died. As the ship...

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. Here's what you need to know about the cruise ship hantavirus outbreak Last week, eight passengers aboard a Dutch-flagged cruise ship contracted a type of hantavirus transmitted by rats. Three have...