cool

What's cool to you might not be cool to the next person, so make sure you really have a good idea what is in, and what is out.

Cool Science of the Day: 3D Print Your Bones to Mend Injuries Faster

Fun Tech Accessory of the Day: AER Lets You Throw Your GoPro and Take Awesome Aerial Videos

Awesome Sport of the Day: Competitive Indoor Skydiving is the Coolest Sport You Didn't Know Existed

Eyeroll of the Day: In New Ad, Microsoft Sells Computers to Hipsters, Induces Nightmares

Cool Tech of the Day: Parrot's New Gliding Disco Drone is the Hawk You Always Wanted

Cool Cat of the Day: The Serval, or "Giraffe Cat"

Artsy Fart of the Day: A Straight Rod Going Through a Curved Hole

Gif of the Day: How to Park a Trial Bike

Oldie but Goodie of the Day: Turbine Doubles as a Musical Instrument

App of the Day: Add Yourself Into Your Favorite App

Chain Reaction of the Day: The Most Expensive Dominoes Stunt Ever

Crazy Skills of the Day: Guy Plays His Guitar While Surfing

Dash Cam of the Day: Woman Keeps Her Cool During a Violent Car Accident

Shut Up and Take My Money of the Day: Copenhagen Literally Reinvented the Wheel

Adrenaline of the Day: Grass Kart Racing

Photorealism of the Day: Dirds - Dogs Shaped Like Birds