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At least 24 people are confirmed dead, including seven children, and many are missing after a tornado tore through Oklahoma City, US officials say.
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As EU leaders gather to discuss tax evasion, non-member Switzerland is under increasing pressure to abandon its long tradition of banking secrecy.
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CEO Tim Cook has spoken out in defence of Apple, after a Senate committee accused the company of using "a complex web of offshore entities" to avoid paying billions of dollars in US income taxes.
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Dozens of people are feared killed by a huge tornado which tore through Oklahoma City suburbs, officials in the US state say. BBC weather presenter Ben Rich explains how the tornado was formed.
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Women in Argentina have been protesting for compensation following the scandal around faulty breast implants made by the French company Poly Implant Prothese
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Google executive chairman Eric Schmidt has said he welcomes the current debate about tax avoidance by multinationals, but rejected criticism of his company's conduct.
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Yoga classes in Langata Women's Prison in Nairobi, Kenya, are inspiring both inmates and teacher. The Africa Yoga Project is teaching yoga in slums, orphanages and prisons in Kenya.
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A "stocktake" of UK nature suggests 60% of animal and plant species have declined in the past 50 years - and one in 10 could end up disappearing.