• Surprise, surprise: Hooking up with the random dude you met at that "Breaking Bad" viewing party is probably going to make you sad. A study out of California State University found that people who had casual sex on the regular were more likely to report lower levels of happiness and self-esteem. But the question is: Which came first? The low self-esteem? Or the causal sex? [Source]

• The Lifestraw is a small canister that allows you to safely filter water on the go. Which is great if you're stuck out of doors with no water bottle, or in a scary abandoned house where the only water supply is toilet water. The Lifestraw will safely transform that toilet water into safe drinking water. Which doesn't mean we still won't get mildly grossed out at the thought of you slurping up toilet water, sorry. But for real, they're being widely implemented across Sub-Saharan Africa, which is a very good thing. [Source]

• All swimsuits are not created equal. But even so, it's hard to understand how something made from such a little swathe of fabric can cost so much. But! "Constructing even a simple swimsuit is every bit as complex as constructing a dress," explains Nancy Stanforth, professor of fashion merchandising at Kent State University. Plus? Stretchy fabrics are actually more expensive than many other fabrics. And swimsuits have to endure the elements (sun, sand, your chlorinated pool) in a more direct way than other fabrics, so they've got to be treated, too. [Source]

• The Hövding Invisible Helmet is certainly a helmet but is definitely not invisible. In its uninflected state, the helmet looks like a jacket collar or scarf. But when sensors detect changes in speed or angle, the helmet inflates itself and creates "a futuristic headpiece" that wouldn't be out of place in say, an episode of "Star Trek: TNG" or "Tron." [Source]