Hungry polar bears at night could be one of the fiercest dangers that Portsmouth-born explorer Alex Hibbert faces when he tackles one of the last great Arctic challenges.
Moving fractured sea ice, unpredictable weather conditions and temperatures as low as -50C could also throw up problems as he makes an unsupported attempt to reach the North Pole in the depths of Winter.
He sets off today.
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A number of teenagers, aged 13 to 15, from Portsmouth, have been treated in hospital, after taking tablets believed to be diazepam.
Thursday Evening's Pollen Forecast
Thursday night's weather for the east of the region