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Greece’s invisible minority – the Macedonian Slavs

Image copyright Getty Images Image caption Greeks protest in Thessaloniki against the agreement on the name North Macedonia By ratifying an agreement with the newly renamed Republic of North Macedonia, Greece has implicitly recognised the existence of a Macedonian language and ethnicity. And yet it has denied the existence of its own Macedonian minority for decades, says Maria Margaronis. Will something now change? Mr Fokas, 92, stands straight as a spear in his tan leather brogues and cream blazer, barely leaning on the ebony and ivory cane brought from Romania…

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Catherine Wreford: The dancer with an ‘invisible disease’

Image caption Catherine Wreford and Craig Ramsay will play Lady and Lord Capulet in Romeo and Juliet You could easily go and see Catherine Wreford perform in a show and not know anything was wrong. A professional dancer with a huge number of stage credits to her name, it’s perhaps only when you look at the show programme that you’d find out she has brain cancer. “I always put it in my bio because I want people to know I’m on stage and still performing, but I have an invisible…

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Invisible banana skins thrown at black people every day, says John Barnes

Liverpool’s John Barnes backheels a banana that was thrown onto the pitch during a game at Everton in 1988 They are two Jamaica-born England internationals playing 30 years apart, but racism has proved an issue for both. Manchester City winger Raheem Sterling was allegedly racially abused during his side’s 2-0 defeat at Chelsea, while former Liverpool winger John Barnes experienced racism in his career. Barnes famously backheeled a banana skin off the pitch in a game at Everton in 1988 and tells BBC Sport that the problem has not gone…

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Science 

Device could make underwater objects appear invisible to sonar

Image copyright Peter Kerrian Image caption This 90cm (3ft) -tall steel pyramid is designed to act as underwater sonar cloak It sounds like the type of tech a Bond villain would have, but scientists have developed an acoustic underwater “invisibility cloak”. The device makes sound waves scatter around an object making it invisible to sonar detection. This means when a ship sends out a signal to detect other objects in the ocean or to map the sea floor, the signal bounces back. So it appears as if the cloaked object…

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