Raising Cute Pandas: It's Complicated | National Geographic
AdultsAnimalsEducationNatureGiant panda cubs are adorable fluff balls that squeak and squeal. This endangered species is also incredibly tricky to breed and raise in captivity. In the 1960s, only 30 percent of infant pandas born at breeding centers survived. Today 90 percent survive. So, what changed?
TRUE Limits Of Humanity – The Final Border We Will Never Cross
AdultsEducationHumanLifeIs there a border we will never cross? Are there places we will never reach, no matter how hard we try? It turns out, there are. Even with sci-fi technology, we are trapped in a limited pocket of the Universe and the finite stuff within it. How much universe is there for us and how far can we go?
How An Infinite Hotel Ran Out Of Room
AdultsCreativityEducationLifePhilosophyScienceIf there's a hotel with infinite rooms, could it ever be completely full? Could you run out of space to put everyone? The surprising answer is yes -- this is important to know if you're the manager of the Hilbert Hotel.
How one design flaw almost toppled a skyscraper - Alex Gendler
AdultsCitiesConstructionHistoryEngineeringArchitectureIndustryDig into the unique engineering of New York City’s Citicorp Center tower, and the design flaw that threatened to topple it.
How do wind turbines work?
AdultsNatureScienceTechnologyEnergyEnvironmentExplore how wind turbines convert wind into electricity, and the challenges of powering the world entirely with wind energy.
This Unstoppable Robot Could Save Your Life
AdultsConstructionCreativityScienceTechnologyThis robot has applications to archaeology, space exploration, and search and rescue — with a simple elegant design inspired by a plant.
Whatever happened to acid rain? - Joseph Goffman
AdultsHistoryLifeNatureEnvironmentScienceGlobal WarmingDiscover what causes acid rain, and how scientists were able to largely eliminate this major environmental threat.
New Feature - Share Exercises with Multiple Classes
TeachersTeacher CafeEducationTeachers can now share an exercise with multiple classes at once.
New Feature - Release Exercise Answers
TeachersTeacher CafeEducationExercise answers are now hidden from the students by default. You can release the answers at any time by clicking on this icon.