• A major exhibition of the works of John Singer Sargent has opened at the National Portrait Gallery off Trafalgar Square this week. Sargent: Portraits of Artists and Friends – which has been organised in conjunction with the Metropolitan Museum of Art in New York – brings together a collection of the artist’s intimate and informal portraits of his friends including Robert Louis Stevenson, Claude Monet and Auguste Rodin. Sargent (1856-1925), born the son of an American doctor in Florence, studied in Italy and France before scandal led him to move to England where he established himself as the country’s leading portrait painter. He made several visits to the US during his career, painting portraits as well as decorative paintings for public buildings including the Boston Public Library and Museum of Fine Arts. The exhibition runs until 25th May. Admission charge applies. For more, see www.npg.org.uk. PICTURE: Courtesy of the Taft Museum of Art, Cincinnati, Ohio

• It’s Chinese New Year and the celebrations kick off in London’s Chinatown in Soho this Sunday. The day starts with a parade at 10am which runs from Duncannon Street to Shaftesbury Avenue featuring floats and Chinese lion and dragon teams. It will be followed by a free programme of events in Trafalgar Square which, starting at noon, include music, dance, acrobatics and martial arts. Other events are taking place at a range of locations across the West End. For more information, check out www.london.gov.uk/get-involved/events/chinese-new-year-2015.

• Ever wondered how your appetite is shaped by food? A new free exhibition at the Science Museum in South Kensington, Cravings: Can Your Food Control You? explores how the brain, ‘gut brain’ and bacteria influence our diets. Along with personal stories and objects as well as the use of science and tech to present the display, those who attend the exhibition will also be able to take part in a ground-breaking neurogastronomy experiment to explore how our senses influence appetite (the experiment is also available online – follow the link below). There’s also a digital quiz where you can consider the ethical challenges that cravings, appetite control and food regulations pose. Runs until January next year. For more, see www.sciencemuseum.org.uk/cravings.

• The history of the Foundling Hospital’s Boy’s Band is the subject of a display at the Foundling Museum in Bloomsbury. Foundlings at War: Military Bands is part of a series of exhibits supported by the Heritage Lottery Fund exploring the hospital’s links with the military. The Boy’s Band was established in 1847 and boys who joined increasingly went on to serve in the military. Runs until 10th May. For more, see www.foundlingmuseum.org.uk.

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