How tall can a tree grow? – Valentin Hammoudi

From TED Ed. What makes a tree grow tall? And do trees ever stop growing? Explore how photosynthesis and gravity can affect and limit the height of trees. — Reaching heights of over 100 meters, Californian sequoias tower over Earth’s other 60,000 tree species. But even these behemoths seem to have their limits: no sequoia…

The physics of surfing – Nick Pizzo

From TED Ed. Wondering how you can catch the perfect wave? Dive into the fascinating and complex physics of surfing. — Whether or not you realize it, surfers are masters of complicated physics. The science of surfing begins as soon as a board first hits the water. Surfers may not be thinking about weather patterns…

How does the Rorschach inkblot test work? – Damion Searls

From TED Ed. What are the origins of the Rorschach test and how does it work? Explore the inkblot tool psychologists use to test a subject’s perceptions and mental health. — For nearly a century, ten inkblots have been used as an almost mystical personality test. Long kept confidential for psychologists and their patients, the…

Three ways the universe could end – Venus Keus

From TED Ed. Our universe started with the Big Bang, but how will it end? Explore cosmologists’ three possible scenarios: the Big Crunch, the Big Freeze and the Big Rip. — We know about our universe’s past: the Big Bang theory predicts that all matter, time and space began about 14 billion years ago. And…

The sexual deception of orchids – Anne Gaskett

From TED Ed. Check out the fascinating ways orchids trick insects into pollinating, using sexual deception, pheromones and mimicking the shapes of other plants. — Nearly 28,000 species of orchid grow all around the world, bearing every imaginable color, shape and pattern. There’s a cunning purpose behind these elaborate displays: many orchids trick insects into…

What is consciousness? – Michael S. A. Graziano

From TED Ed. Explore the theories of human consciousness and the science of how your brain works to create a conscious experience. — Patient P.S. suffered a stroke that damaged the right side of her brain, leaving her unaware of everything on her left side. If someone threw a ball at her left side, she…

Will there ever be a mile-high skyscraper? – Stefan Al

From TED Ed. Would a mile-high skyscraper ever be possible? Explore the physics behind some of the tallest buildings and megastructures in the world. — In 1956, architect Frank Lloyd Wright proposed a mile-high skyscraper, a building five times as high as the Eiffel Tower. While this massive tower was never built, today bigger and…