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The European Commission is reviving a push for a common patent policy by asking for input of ideas from industry and stakeholders - a move that would renew a fierce debate that has spanned more than three decades.

For some it was like a very bad Greek tragedy, for others a hoax more naive than the Piltdown man. But Hwang Wo-suk's fall from grace puts the UK on level terms with South Korea in the race to generate embryonic stem cells from cloned embryos.