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Science news with Dr Chris Smith of The Naked Scientists and the clearest evidence yet linking the Zika virus to microcephaly in children. Also how trees are sharing carbon via their root systems. Audio
Official advice to athletes or travellers going to the Rio Olympics in August will not change despite Brazil's Zika outbreak, the Health Ministry says.
An American mother whose daughters suffer from microcephaly talks to Checkpoint with John Campbell about the condition. Video, Audio