Material World - 03/09/2009

Quentin Cooper and guests dissect the week's science. With two major announcements this summer on improvements to the rail network, transport minister Lord Adonis explains how they should help connect cities and reduce our carbon footprint. With energy analyst Mark Barrett. A physicist explains how he forecast a collapse of the Shanghai stock market and what it tells us about the dynamics of the financial sector. With children returning to school this week, two health experts explain how they plan to track the changes in the flu pandemic. How a gene 7,500 years ago helped us acquire a taste for milk.