Stanford researchers say the human brain may really be two separate organs pushed together by evolution, so maybe we have always been in two minds. Donald Trump's latest financial disclosure shows 1,156 securities trades in July alone, which raises the question of how far a president should be kept from his own investments. Back home, the Fisheries Department is trying to work out whether piranhas are living in Klau Dam in Raub, and the fish they need to check was thrown away. Richard Bradbury, Roshan Kanesan and Frankie Lim run through the week's stories in What's The Focus.

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