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18/04/2013

We cover the breaking news on the Boston bombings; the arrests over the ricin letters sent to US politicians; the huge factory explosion near Waco and Dr Karl talks science.

We're in the US covering the breaking news from Boston on the marathon bombings, the arrest over the Ricin letters sent to US politicians and the huge fertiliser plant explosion in Waco. Also the former Canadian PM Brian Mulroney looks back at Margaret Thatcher's life and Dr Karl answers your science questions.

4 hours

Last on

Thu 18 Apr 2013 01:00

Broadcast

  • Thu 18 Apr 2013 01:00

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