简介：https://www.bbc.co.uk/iplayer/episode/b0bb33ht/horizon-2018-3-how-to-build-a-time-machine　　Time travel is not forbidden by the laws of nature, but to

简介：Most of us think that Obsessive Compulsive Disorder (OCD) is just over fussy tidying. But it's actually much more serious. Sophie has to check tha

简介：人为什么会笑？笑的本质是什么？笑声在社交中有什么作用？大脑能分辨真笑和假笑吗？存在全世界通行的喜剧吗？

简介：The car has shrunk the world, increased personal freedom and in so many ways expanded our horizons, but there is a flipside. Fumes from car exhausts h

简介：When a man accidentally kills his brother with an ax, his fiancée is determined not to let even murder stand in the way of their happiness.

简介：This episode looks at the issues that will change the way we live our lives in the future. Rather than relying on the minds of science fiction writers

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简介：FEEL RICH: HEALTH IS THE NEW WEALTH documents the nascent self-love revolution emerging in urban communities. Narrated by Quincy Jones III, the film f

简介：Black holes stand at the limit of what we can know. To explore that edge of knowledge, the Event Horizon Telescope links observatories across the worl

简介：In 2016 filmmaker/photographer Pete McBride and writer Kevin Fedarko set out on a 750-mile journey on foot through the entire length of the Grand Cany