The fallout of the Jimmy Savile abuse scandal has seen the number of calls made to a charity helpline reporting sex abuse nearly double compared with last year.
Staff at the NSPCC received 594 calls to its helpline in June and July this year to report sexual abuse, compared with 323 in the same period last year.
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Research by Swansea University showed one in 20 students had worked in the sex industry while studying for a degree.
Writing for ITV News, Dr Daniel Cooper says the world should not become complacent about Ebola and other problems affecting Sierra Leone.
Charities warn that sitting down too long can lead to health risks such as type 2 diabetes and cardiovascular disease.