US President Barack Obama is still seeking approval from Congress for a possible military strike in Syria despite the possibility of reaching a diplomatic deal, according to State Secretary John Kerry.
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Scientists are researching a blood test which can quickly detect colon, lung, breast, stomach and endometrial cancer.
Transport bosses are said to be in "active discussions" with the company to encourage it to extend its pilot scheme to the UK's capital.
Reports suggest the 67-year-old is expected to be named as one of the hosts of the new series within days.