BeetleFrom Dr Livingstone, I presume? A recently unearthed collection of beetles gathered together by Dr David Livingstone during his Zambezi expedition of 1858-64 will go on display in its original box at the Natural History Museum in South Kensington on Friday night. The specimens were found among the museum’s 10 million beetles by beetle curator Max Barclay who stumbled on an unusual box received from a private collector. The collector was later found out to be amateur entomologist Edward Young Western (1837-1924) who apparently bought the specimens from a member of Livingstone’s expedition. The 20 beetles found inside the box are believed to the only surviving specimens known to have been collected by Livingstone. The specimens will be on show as part of Science Uncovered, a free annual after hours event – part of European Researcher’s Night – which will take place at the museum between 3pm and 10.30pm Friday night. Other highlights of the night include the chance to extract DNA from strawberries and bananas, create your own earthquake and chat live with NASA about chasing asteroids. For more, see www.nhm.ac.uk/scienceuncovered. PICTURE: Giant Predatory Ground Beetle, Termophilum alternatum © The Trustees of the Natural History Museum, London.

Totally Thames – the month long celebration of the great river – is going out with a bang this weekend with more than 300 crews expected to take part in the Great River Race. Running from Millwall to Ham in Surrey, the 21.6 mile long event attracts entries from across the globe. The first boats leave Millwall at 12.40pm. Head to the riverbank between Richmond and Ham at approximately 3.40pm to see the winners cross the line to a cannon broadside. For more on the Great River Race, see www.greatriverrace.co.uk. Other events on as part of Totally Thames this weekend include historic riverside walks – one focused on Brunel and another on London’s ports before the Great Fire of 1666 as well as exhibitions including Richmond’s River at Orleans Gallery House in Twickenham and your last chance to see Florentijn Hofman’s HippopoThames. For more on Totally Thames, see www.totallythames.org.

Some of Snowdon’s most iconic images will be on show as part of a new exhibition opening at the National Portrait Gallery near Trafalgar Square on Friday. Snowdon: A Life in View will feature studio portraits spanning a period from the 1950s to the 1990s alongside images from Private View, Snowdon’s 1965 examination of the British art world, created in collaboration with art critic John Russell and then director of Whitechapel Gallery, Bryan Robertson. More than 40 black-and-white portraits are included in the display including some works acquired by the gallery last year. To be held in Room 37 and 37a of the ground floor Lerner Contemporary Galleries until 21st June. Admission is free. For more, see www.npg.org.uk.

On Now: Foundlings at War: World War I. This display at the Foundling Museum in Bloomsbury reveals for the first time the stories of foundlings who fought as well as those of the mothers forced to leave their children at the hospital as a result of bereavement or abandonment of those serving abroad. A free digital ibook, The Foundlings at War: World War I, containing expanded background information was published to coincide with the opening of the display earlier this month and can be downloaded from iTunes. The exhibition is part of a major research project, Foundlings at War, supported by the Heritage Lottery Fund and is the first of several displays examining the institution’s historic links with the military. For more, see www.foundlingmuseum.co.uk.

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A 21 metre long wooden hippopotamus, HippopoThames, has been spotted in the River Thames off the new quarter of Nine Elms near Battersea in the city’s west. The semi-immersed sculpture, by Dutch artist Florentijn Hofman (famed for his huge yellow Rubber Duck), is part of the month long celebration of London’s river known as Totally Thames and can be seen at the site until 28th September. The sculpture was inspired by the history of the Thames – in particular, the hippos which once inhabited it (in fact, there’s a talk on the subject of the hippos at the Doodle Bar in Battersea tonight – admission charge applies, see www.totallythames.org/events/info/thames-natural-history). Hippopo is moored off Riverside Gardens, Nine Elms Lane, SW8 2DU. For foreshore access times, see www.totallythames.org/events/info/florentijn-hofman. PICTURES: Steve Stills.

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