New Zealand has reported 14 new Covid-19 cases a day after its biggest city, Auckland, went back into lockdown. The detection of four new infected family members earlier this week shocked a country that had recorded no locally transmitted cases for more than three months. Of the new cases, 13 have been linked back to this family, while one is an overseas arrival who was in quarantine. A three-day lockdown was imposed in Auckland on Wednesday. "We can see the seriousness of the situation we are in," Prime Minister Jacinda Ardern said in a news conference.

 The US government has proposed changing the definition of a showerhead to allow increased water flow, following complaints from President Donald Trump about his hair routine.

Under a 1992 law, showerheads in the US are not allowed to produce more than 2.5 gallons (9.5l) of water per minute.

The Trump administration wants this limit to apply to each nozzle, rather than the overall fixture.

Consumer and conservation groups argue that it is wasteful and unnecessary.

The changes were proposed by the Department of Energy on Wednesday following complaints by Mr Trump at the White House last month.

"So showerheads - you take a shower, the water doesn't come out. You want to wash your hands, the water doesn't come out. So what do you do? You just stand there longer or you take a shower longer? Because my hair - I don't know about you, but it has to be perfect. Perfect," he said.

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Andrew deLaski, executive director of the energy conservation group Appliance Standards Awareness Project, said the proposal was "silly".

With four or five or more nozzles, "you could have 10, 15 gallons per minute powering out of the showerhead, literally probably washing you out of the bathroom," he told the Associated Press news agency.

"If the president needs help finding a good shower, we can point him to some great consumer websites that help you identify a good showerhead that provides a dense soak and a good shower," he added.