Insects

Watch this video. WATCH. IT. If you're anything like me, it will leave you with your mouth hanging open, slightly unsettled, at one of nature's most incredible, disconcerting, skin-crawling species: 

Brain freeze, sunburns, and bug bites -- welcome to summer! While summer in the Northern Hemisphere often conjures up images of swimming pools and beach umbrellas, it also comes with a few pains. While scientists can't make them go away (yet), they can at least tell us why we have to suffer through them! Maybe brain freeze, sunburns, and itchy bug bites can somehow be a good thing?

What causes brain freeze?