May 21, 2013 at 9:29 AM ET
Our pre-caffeine roundup is a collection of the hottest, strangest, and most amusing stories of the morning.
Do tornadoes follow well-worn tracks? Where do the deadliest twisters hit? Will climate change make such storms worse? Monday's devastating tornado in Oklahoma raises some questions for which scientists have ready answers, and others that could puzzle them for years to come.
Meanwhile, inexpensive construction techniques could have kept up to 85 percent of the affected houses in Oklahoma standing, according to a civil engineer.
In other news, Yahoo's purchase of blogging site Tumblr wasn't the only news from the company Monday: It also rolled out its redo of photo-sharing service Flickr, adding a new layout, a refreshed Android app, and perhaps most temptingly, a full terabyte of storage free to all users.
Speaking of Tumblr's teenage wasteland: Now that Yahoo's made it "mainstream," wait till Mom and Dad find out!
When a U.K. police station posted a fugitive's mugshot on its Facebook page, the cheeky lad wrote in from his personal account: "Catch me if u can." So they did.
Did you know you can totally earn a PhD by studying a theory everybody pretty much knows is wrong? It's true!