Canadian Prime Minister Mark Carney announced retaliatory tariffs on the United States on Saturday, after walking away from a "bad deal" on trade in a deepening rift between the longtime allies.
A Chinese humanoid robot ran 100 metres in 9.39 seconds in a preliminary heat at the World Humanoid Robot Games in Beijing on Saturday, faster than the men's world record held by Jamaican sprinting great Usain Bolt.
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