61
By TED-Ed
Published in 2013
You already know that a trip to the beach can give you a nasty sunburn, but the nitty gritty of sun safety is actually much more complex. Wrinkle-causing UVA rays and burn-inducing UVB's can pose a serious risk to your health (and good looks). So what can you do? Kevin P. Boyd makes the case to slap...
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62
By TED-Ed
Published in 2013
Why do some regions experience full-time heat while others are reckoning with frigid temperatures and snow? And why are the seasons reversed in the two hemispheres? Rebecca Kaplan explains how the shape of the Earth's orbit around the Sun and the Earth's tilt on its axis affect the amount of...
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63
By TED-Ed
Published in 2013
In this brief talk, Saul Griffith unveils the invention his new company Makani Power has been working on: giant kite turbines that create surprising amounts of clean, renewable energy.
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64
By TED-Ed
Published in 2013
Fresh water accounts for only 2.5% of Earth's water, yet it is vital for human civilization. What are our sources of fresh water? In the first of a two part series on fresh water, Christiana Z. Peppard breaks the numbers down and discusses who is using it and to what ends.
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65
By TED-Ed
Published in 2013
Ocean explorer Robert Ballard takes us on a mindbending trip to hidden worlds underwater, where he and other researchers are finding unexpected life, resources, and even new mountains. He makes a case for serious exploration and mapping. Google Ocean, anyone?
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66
Published in 2017
For more than 50 years, Baltazar Ushca Tenesaca has been ascending Ecuador's tallest mountain to harvest glacial ice. At one time, there were 40 or so ice merchants who made the daily trek up the active volcano. but now, only Ushca continues this 500-year-old tradition. And while the deman for ice...
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67
Published in 2017
From the perspective of us here on Earth, clouds are usually pretty boring. Sure, sometimes we spot one that looks cool or see a unique formation that we take a photo of for Instagram and then move on with our lives. But for astronauts and satellite cameras looking down on th eplanet from above,...
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68
Published in 1995
Bill Nye talks about rocks and soils. Season 3 Episode 4.
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69
Published in 1998
Bill Nye talks about erosion. Season 5 Episode 14.
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70
Published in 1997
Bill Nye talks about volcanoes. Season 4 Episode 14.
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71
Published in 1993
Bill Nye talks about dinosaurs. Season 1 Episode 3.
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72
Published in 1997
Bill Nye talks about space exploration. Season 5 Episode 2.
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73
Published in 1998
Bill Nye talks about comets and meteors. Season 5 Episode 15.
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74
Published in 2015
A day in the life of a Geologist at ConocoPhillips.
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75
Published in 2017
What are wildfires and how do they start? Learn how we can prevent destructive wildfires, and how we can manage wildfires to improve the health of forests.
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76
Published in 2017
How did the rings around Saturn form? How many moons does the planet have? See stunning NASA images of the gas giant studied by Christian Huygens and Giovanni Cassini.
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77
Published in 2017
How many planets are in the solar system? How did it form in the Milky Way galaxy? Learn facts about the solar system's genesis, plus its planets, moons, and asteroids.
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78
Published in 2017
Forests cover about 30% of the planet, but deforestation is clearing these essential habitats on a massive scale. What is deforestation? Find out the causes, effects, and solutions to deforestation.
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79
Published in 2017
Oceans serve as the planet's largest habitat and also help to regulate the global climate. But why is the ocean salty? And how is climate impacting the ocean? Find out more about the ocean, including the consequences of and potential solutions to these changes.
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80
Published in 2016
Mars, the fourth planet from the sun, has been a source of intrigue throughout human history. Recent NASA exploratory expeditions revealed some of the planet's biggest mysteries. This video explains what makes Mars so different fro mEarth and what would happen if humans lived there.
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