The Most Amazing Thing About Trees
Adults Ecology NatureTrees create immense negative pressures of 10's of atmospheres by evaporating water from nanoscale pores, sucking water up 100m in a state where it should be boiling but can't because the perfect xylem tubes contain no air bubbles, just so that most of it can evaporate in the process of absorbing a couple molecules of carbon dioxide. Now I didn't mention the cohesion of water (that it sticks to itself well) but this is implicit in the description of negative pressure, strong surface tension etc.
How Google responds to government search warrants
Adults Business Justice Social MediaHow Google responds to search warrants, while working hard to protect our users' privacy and security. Learn more about how we handle requests.
Why waste time? It doesn't earn interest.
Adults Life Philosophy"Why waste time? It doesn't carry over to the next day. It doesn't earn interest. Take every day and every moment, and make something of it. Make something positive." - Elvis de Leon
Why do we cry? The three types of tears
Adults Biology Human ScienceWhether we cry during a sad movie, while chopping onions, or completely involuntarily, our eyes are constantly producing tears. Alex Gendler tracks a particularly watery day in the life of Iris (the iris) as she cycles through basal, reflex and emotional tears.
X-Men: Days of Future Past | Official Trailer 2
Adults Film MarketingThe ultimate X-Men ensemble fights a war for the survival of the species across two time periods in X-MEN: DAYS OF FUTURE PAST. The beloved characters from the original "X-Men" film trilogy join forces with their younger selves from "X-Men: First Class," in an epic battle that must change the past -- to save our future.
Dead stuff: The secret ingredient in our food chain
Adults Ecology FoodWhen you picture the lowest levels of the food chain, you might imagine herbivores happily munching on lush, living green plants. But this idyllic image leaves out a huge (and slightly less appetizing) source of nourishment: dead stuff. John C. Moore details the "brown food chain," explaining how such unlikely delicacies as pond scum and animal poop contribute enormous amounts of energy to our ecosystems.
Anti-Gravity Wheel?
Adults Internet Culture PhysicsIn this video I attempt to lift a 19kg (42 lbs) wheel over my head one-handed while it's spinning at a few thousand RPM. This replicates an earlier experiment by Professor Eric Laithwaite. He claimed the wheel was 'light as a feather' and could not be explained by Newton's Laws. I wanted to find out for myself what I really felt like.
Dance Walking Fitness Ben Aaron.
Adults Internet Culture MusicHysterically funny man Ben Aaron shows us the new craze he has developed he calls... "Dance Walking Fitness"
Peanuts | Teaser Trailer [HD] | FOX Family
Adults Film MarketingFor the first time ever, Snoopy, Charlie Brown and the rest of the gang we know and love from Charles Schulz's timeless "Peanuts" comic strip will be making their big-screen debut; like they've never been seen before in a CG-Animated Feature film in 3D.
HAPPY - Walk off the Earth Ft. Parachute
Adults Internet Culture MusicHere is our version of Pharrell's Happy with our good friends Parachute. Take action to create a Happier world for people everywhere. Visit 24hoursofhappiness.com
Chris Hadfield: What I learned from going blind in space
Adults Life SpaceThere's an astronaut saying: In space, "there is no problem so bad that you can't make it worse." So how do you deal with the complexity, the sheer pressure, of dealing with dangerous and scary situations? Retired colonel Chris Hadfield paints a vivid portrait of how to be prepared for the worst in space (and life) -- and it starts with walking into a spider's web. Watch for a special space-y performance.
The Making of Unnumbered Sparks I Vancouver
Adults Art CitiesLearn about the making of Unnumbered Sparks, a monumental interactive sculpture in the sky created by artists Janet Echelman and Aaron Koblin for TED's 30th anniversary. Choreographed by visitors in real time through their mobile devices, at night, the sculpture becomes a crowd-controlled visual artwork on a giant, floating canvas powered by Google.
The Comfort Zone
Adults Life Psychology SocietyWhat is the comfort zone? Your daily space. The commute to work, school, your family life or relationship, your entourage. But definitely stay in this circle does not expand and you will always find it harder to make discoveries.
When Water Flows Uphill
Adults Physics ScienceIn the Leidenfrost Effect, a water droplet will float on a layer of its own vapor if heated to certain temperature. This common cooking phenomenon takes center stage in a series of playful experiments by physicists at the University of Bath, who discovered new and fun means to manipulate the movement of water.