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Watch LaterAdded 04:11 說氣候變遷 Is our climate headed for a mathematical tipping point? – Victor J. Donnay
Watch LaterAdded 53:42 科普直播RoI John Tyndall: The Physicist Who Proved the Greenhouse Effect – with Paul Hurley
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Watch LaterAdded 05:30 說太空 Light seconds, light years, light centuries: How to measure extreme distances – Yuan-Sen Ting
