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Sheffield Wednesday's struggles are a "significant problem" and the football regulator is seeking powers to investigate clubs in such situations, its new chair David Kogan has said.

It said it was addressing the root causes of knife crime through its Young Futures programme and that schools had the power to implement their own security measures including knife arches.

If they formally approve it, Israel must withdraw its troops from Gaza to the agreed line, a senior White House official told BBC's US partner, CBS News.

Normally, alpha-synuclein's natural or "native state" is like a flexible strand, but when active it shapes itself into a helix, which is critical for its function in binding and transporting parcels of dopamine.

Green tea is an ancient beverage recognized for its medicinal and antioxidant properties.