An Edinburgh doctor who set out to run seven ultra marathons on seven continents in a week has completed the challenge with a day to spare.

BBC: Andrew Murray

Ultra-Orthodox conscription rates have increased seven-fold in the past four years.

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The scientists, based in the Netherlands and Germany, used an ultra-speed camera and a hydrophone in an aquarium to record what happened when seven individual shrimps closed their claws in response to being tickled by a paintbrush.

BBC: Shrimp, bubble and pop

Seven-year-old Luka Apps spent his Christmas money on the LEGO Ninjago Ultra Sonic Raider set.

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