Latest Lesson
What happens to these balloons when you open the valve?
Take a balloon and fill it with lots of air. Take another one and fill it with less air. Now connect the two via a valve. What do you thi...
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Puzzle through an ethical dilemma and decide: what responsibility do we have to honor the wishes of the dead? -- For decades, Yvonne and Z...
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A long, long time ago, Earth was home to one giant super continent. So, what happened? In this episode of Crash Course Geology, we’ll break...
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During the lockdowns, the appearances of wild animals in cities provided a glimpse of a world spared from noise and light pollution. Scien...
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