Alice Roberts explores the latest discoveries in the study of human origins, revealing the transformation that has been brought about in this field by genetics. 　　Traditional paleo-anthropology, based on fossils, is being transformed by advanced genome sequencing techniques. We now know that there were at least four other distinct species of human on the planet at the same time as us - some of them identified from astonishingly well-preserved DNA extracted from 50,000-year-old bones, others hinted at by archaic sections of DNA hidden in our modern genome. What's more, we now know that our ancestors met and interacted with these other humans, in ways that still have ramifications today. Alice uses these revelations to update our picture of the human family tree.

Alice Roberts explores the latest discoveries in the study of human origins, revealing the transformation that has been brought about in this field by genetics. 　　Traditional paleo-anthropology, based on fossils, is being transformed by advanced genome sequencing techniques. We now know that there were at least four other distinct species of human on the planet at the same time as us - some of them identified from astonishingly well-preserved DNA extracted from 50,000-year-old bones, others hinted at by archaic sections of DNA hidden in our modern genome. What's more, we now know that our ancestors met and interacted with these other humans, in ways that still have ramifications today. Alice uses these revelations to update our picture of the human family tree.

Horizon is BBC Two's flagship 50-minute science documentary series. In September 2004 it celebrated its 40th anniversary and it continues to enjoy outstanding critical acclaim. Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia. In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand. In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.

Horizon is BBC Two's flagship 50-minute science documentary series. In September 2004 it celebrated its 40th anniversary and it continues to enjoy outstanding critical acclaim. Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia. In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand. In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.

一群好朋友坐船出游，在遭遇了撞船事故后，他们被困在一个不知名的小岛上。在那里，他们遇到了一个原始的部落。

一群好朋友坐船出游，在遭遇了撞船事故后，他们被困在一个不知名的小岛上。在那里，他们遇到了一个原始的部落。

第1集 　　在本集节目中团队提出了一个最基本的问题，猫如何通过看听和嗅，来认识周围的世界。对于人类来说视觉是主要的感官，那么猫呢？ 　　第2集 　　本节目将揭示你所喜爱的宠物，如何转变成好斗的猎食者。我们的猫和它们的大型猫科远亲有着相同的捕猎天性，它们也表现出了巡逻和保护自己领地的需要。但大型猫科动物是野生动物而猫找到了成为宠物的方法，那么它们是如何适应和发展出与人类共处的能力的呢。宠物猫似乎并不怕害我们，一些猫甚至积极地寻求我们的陪伴。 　　第3集 　　世界顶级的猫类科学家将进行一项史无前例的科学研究，来发现我们猫类朋友的秘密生活，向你展示不可思议的猫语，它们会发出颤音，会发出咘咘的有趣叫声。实验将向你展示猫如何让彼此知道它们是朋友亦或敌人，我们睡觉时它们有着不可思议的对话，以及它们为何如此让人喜爱。本期节目将向你揭示猫类的秘密语言以及它们对你的倾诉。

第1集 　　在本集节目中团队提出了一个最基本的问题，猫如何通过看听和嗅，来认识周围的世界。对于人类来说视觉是主要的感官，那么猫呢？ 　　第2集 　　本节目将揭示你所喜爱的宠物，如何转变成好斗的猎食者。我们的猫和它们的大型猫科远亲有着相同的捕猎天性，它们也表现出了巡逻和保护自己领地的需要。但大型猫科动物是野生动物而猫找到了成为宠物的方法，那么它们是如何适应和发展出与人类共处的能力的呢。宠物猫似乎并不怕害我们，一些猫甚至积极地寻求我们的陪伴。 　　第3集 　　世界顶级的猫类科学家将进行一项史无前例的科学研究，来发现我们猫类朋友的秘密生活，向你展示不可思议的猫语，它们会发出颤音，会发出咘咘的有趣叫声。实验将向你展示猫如何让彼此知道它们是朋友亦或敌人，我们睡觉时它们有着不可思议的对话，以及它们为何如此让人喜爱。本期节目将向你揭示猫类的秘密语言以及它们对你的倾诉。

Horizon: The Truth About Looking Young Plastic surgeon Dr Rozina Ali leaves the operating theatre behind for the frontiers of skin science and asks if it is possible to make your skin look younger without surgery. She discovers the latest research about how the foods we eat can protect our skin from damage, and how a chemical found in a squid's eye is at the forefront of a new sun protection cream. She also finds out how sugar in our blood can make us look older, and explores an exciting new science called glycobiology, which promises a breakthrough in making us look younger.

Horizon: The Truth About Looking Young Plastic surgeon Dr Rozina Ali leaves the operating theatre behind for the frontiers of skin science and asks if it is possible to make your skin look younger without surgery. She discovers the latest research about how the foods we eat can protect our skin from damage, and how a chemical found in a squid's eye is at the forefront of a new sun protection cream. She also finds out how sugar in our blood can make us look older, and explores an exciting new science called glycobiology, which promises a breakthrough in making us look younger.