¥Dºt: Kate Humble / Helen Czerski Ãþ«¬: ¬ö¿ý¤ù »s¤ù°ê®a/¦a°Ï: ^°ê »y¨¥: ^»y º¼½: 2012-05-04 ¶°¼Æ: 3 ³æ¶°¤ùªø: 59¤ÀÄÁ IMDbÃìµ²: tt2286877 BBC «D¤Z®Èµ{¡G¦a²y¤½Âà»P¦ÛÂ઺¼@±¡Â²¤¶ ¡P ¡P ¡P ¡P ¡P ¡P ¡@¡@Presented by Kate Humble and Dr Helen Czerski: ¡@¡@Every step of the Earth¡¦s 940 kilometre, one-year journey around the sun is essential to maintaining life as we know it, giving us the ever-changing weather and seasons that transform our planet. In terms of maintaining life on our planet, 23¢X is truly the magic number. Without this unique tilt, our world would never experience cli..