The series offering the latest news of science, medicine and technology.

Tonight: a report from Tokyo, where the world's biggest fire department is using a robot that can rescue people from burning buildings considered too hazardous for human firefighters; how scientists in New York are combatting "scratchiti" the craze for defacing subway-train windows with emery cloths or fake diamonds - with a cheap, tough alternative; plus, in a feature held over from last week, news of a Nasa experiment that tests if Briton Nigel Packham can survive in a cramped airtight box for 15 days with his oxygen supply recycled by 30,000 wheat seedlings. Presented by Shahnaz Pakravan, Howard Stableford, with Jez Nelson and Vivienne Parry.

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