简介：Something weird seems to be happening to our weather - it appears to be getting more extreme.　　In the past few years we have shivered through two rec

简介：Dr Kevin Fong finds out how doctors can avoid making mistakes in the high-pressure, high-stakes world of the operating theatre.　　He sets out to learn

简介：本片是BBC制作的Horizon(地平线)系列纪录片之一，《地平线》是英国广播公司(BBC)最经典的科教系列之一。