Valentine's Day | History
Adults History Relationships ReligionHow did St. Valentine become associated with love and romance? Get the full story behind the holiday.
The Immune System Explained I - Bacteria Infection
Adults Biology Health HumanEvery second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival.
The myth behind the Chinese zodiac - Megan Campisi and Pen-Pen Chen
Adults Religion SpiritualityWhat's your sign? In Western astrology, it's a constellation determined by when your birthday falls in the calendar. But according to the Chinese zodiac, it's your shuxiang, meaning the animal assigned to your birth year.
Electromagnetic Levitation Quadcopter
Adults Physics TechnologySpinning magnets near copper sheets create levitation!
What If We Have A Nuclear War?
Adults Global Warming Technology WorldWhat would happen if a nuclear weapon was dropped near you?
Chainsaw Art // 60 Second Docs
Adults Art CreativityThere's something dangerous about Stacy Poitras' sculptures. One mistake while carving could result in a ruined chainsaw carving...or even worse. But that's to be expected when he's using a chainsaw as a paintbrush.
Gordon Ramsay Is Stunned by Farmed Caviar; Makes Lobster & Caviar Salad
Adults Creativity Food BusinessGordon heads to Spain to visit a sustainable sturgeon farm, and experiences first hand how much caviar can be produced from just one fish. He then whips up a lobster and potato salad with truffle mayonnaise and caviar to top it all off. Indulgent.
Hydrogel: The Future Of The 'Smart Band-Aid'
Adults Science TechnologyEngineers at MIT have found a way to prevent hydrogels from dehydrating.
The Real Moral Dilemma of Self-Driving Cars
Adults Self-Driving Cars Technology Transportation AutomotiveWe talk about all the potentially challenging situations autonomous cars could get into but not about how human drivers are not very good.
Popping Popcorn at 30,000 FPS
Adults Film Food TechnologyPopping Popcorn at 30,000 Frames Per Second Filmed in Ultra Slow Motion Macro with the Phantom v2512 Ultra High Speed Camera.
How to master your sense of smell
Adults Biology HumanSome perfumers can distinguish individual odors in a fragrance made of hundreds of scents; tea-experts have been known to sniff out the exact location of a particular tea; and the NYC Transit Authority once had a employee responsible only for sniffing out gas leaks.