Commuters in London are paying the highest fares in the world. The warning from MPs in today's Evening Standard reveals major cities, including New York and Berlin have cheaper single fares than the Oyster Card.
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Authorities say two family members were previously denied permission to come to the United States.
The trial - which aims to develop a way of using plants to power camera traps and sensors to monitor remote habitats.
A judge ruled the five-year-old girl could be moved from the Royal London Hospital to the Gaslini children's hospital in Genoa.