Dr Alice Roberts asks one of the great questions about our species: are we still evolving? 　　There's no doubt that we're a product of millions of years of evolution. 　　But thanks to modern technology and medicine, did we escape Darwin's law of the survival of the fittest? 　　Alice follows a trail of clues from ancient human bones to studies of remarkable people living in the most inhospitable parts of the planet and the frontiers of genetic research, to discover if we are still evolving - and where we might be heading.

茫茫宇宙中，是否存在着适合生命安身立命的星球？置身广袤的宇宙，人类又是否是唯一存在着的孤单生物？世界各地一帮具有高度聪明才智，并且训练有素的科学家共同坚持着一个惊人的信念：在浩瀚的宇宙中，可能存在着生命。这是人类曾经尝试过的最“疯狂”的一次实验，去探索宇宙中普遍或偶尔存在的智能生命。然而要证明它，却并非易事。 五十年来，“太阳系外类地智能搜寻小组”在一直观测着银河系，以求来自外星文明的消息。NASA也希望能在十年内再找到50个类似地球的行星。今天，地平线系列纪录片的团队，也成为了“行星搜寻猎队”中的一员。他们曾发现名为“葛利斯581c”（这是迄今已经发现的太阳系外的最类似地球的行星）的“超级地球”，其上很有可能存在着适宜生命存活的环境条件。尽管目前仍毫无效果，但一些激动人心的成就都暗示着外星生命已在银河系的其他地方诞生。

Six months after the explosions at the Fukushima nuclear plant and the release of radiation there, Professor Jim Al-Khalili sets out to discover whether nuclear power is safe. 　　He begins in Japan, where he meets some of the tens of thousands of people who have been evacuated from the exclusion zone. He travels to an abandoned village just outside the zone to witness a nuclear clean-up operation. 　　Jim draws on the latest scientific findings from Japan and from the previous explosion at Chernobyl to understand how dangerous the release of radiation is likely to be and what that means for our trust in nuclear power.