Global TB, bee theft, potato plastic and hogweed

World experts meet in Wales to discuss methods to tackle the global threat of TB in cattle.

Bees hives are being stolen. There have been three significant thefts in Norfolk over the last two months and more than a dozen in the last year. In the last case eighty thousand bees were stolen on the North Norfolk coast. A scientist is making potatoes into plastic. Professor Jurgen Denecke from the university of Leeds says the potato is a diverse being and can be made in to products ranging from bioethenol to kitchen worktops. And black face sheep are the latest tool being used in Scotland against the invasive species Giant Hogweed.

Presented by Anna Hill and produced by Ruth Sanderson.