Things To Do In London Today: Wednesday 27 March 2013

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GIVE BLOOD: Today’s opportunity to donate blood is at Brewers Hall in the City of London. Free, just turn up, see site for times and conditions

BABY GIGGLES: What makes the little nipsters laugh? Psychologist Caspar Addyman probes a baby’s sense of humour at Wellcome Collection’s Packed Lunch event. Free, just turn up, 1pm

LIVE MUSIC LECTURE: This lecture at Gresham College about Baroque music in London under the shadow of Handel, is accompanied by a live performance from a Royal Academy of Music historical performance ensemble. Free, just turn up, 1pm

POETRY WORKSHOP: Richard Marsh and Katie Bonna, who are currently performing in Dirty Great Love Story at Soho Theatre, are hosting a poetry workshop at the same location for anyone wanting to learn how to use verse in dramatic writing, how to write it, and how to keep an audience entertained in the middle of it. £30/£25, prebook, 2pm

ART: Tonight is the preview of Oval Arts latest exhibition, Seecum Cheung/ ∆ / Tracker. Seecum Cheung’s work draws a link between gold as a valuable commodity, and data as a form of modern commercial currency. Free, just turn up, 6pm

COMEDY AND CHARITY: Help raise money for Action Aid by heading to the Good Ship in Kilburn and paying £10 to see Nick Mohammed, Helen Arney, Thomas Nelstrop, Ed O’Meara and Jamie Demetriou, with Nish Kumar hosting. Sounds fair to us. £10, prebook, 7.30pm

LOST RIVERS: Rachel Lichtenstein and Tom Chivers speak about their adventures in the buried River Fleet. Londonist's Matt Brown (another Fleet paddler) then chairs a discussion. £8, prebook, 7.30pm

BURLEXE: From today Burlexe, a brand new theatrical show based on the stories of the incredible women who created burlesque, is returning to The Shadow Lounge with a weekly residency. Kele Le Roc, Jo King and Chloe Ewart make the line-up. £25, prebook, 7.30pm

EMERGING TALENT: Music Chose Us at Brixton Jamm is a monthly showcase of new and promising artists on the UK music scene. Featuring five or six acts, each artist has been selected from hundreds of applicants, so check out the line-up. £8/£5, prebook, 8pm

FILM: To mark National Women's History Month, and in advance of Autism Awareness month in April, Terracotta Film Club is screening Chocolate at The Prince Charles Cinema — a film in which a young autistic heroine learns martial arts from watching films. £6.50, prebook, 9pm

FOUND FOOTAGE: The Found Footage Festival is a celebration of salvaged video tape from the sublime to the ridiculous. There are only two rules on what makes the festival: 1. the footage must have been physically found, and 2. it has to be funny. Expect random, expect strange, and expect lots of big belly laughs. £15, prebook, until 30 March, 9.30pm

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Random London Fact of the Day
You can remember the order of the theatres on Shaftesbury Avenue, south-west to north-east, with the mnemonic "Little Apples Grow Quicker, Please" (Lyric, Apollo, Gielgud, Queen’s, Palace).

Good Cause of the Day
The Big Issue Foundation's Big Sleep Out is back, with an all-night sleepover to help raise money for the charity and show support for vendors. On 26 April 2013, those who sign up will be asked to camp out in a giant warehouse in Earlsfield, where live music, entertainment and talks should keep the mood lively. Registration costs £20, with an expected sponsorship target of £150 per person. Sign up here.

London Weather
Another chillsome start to the day, with slap-bastard winds and the temperature scarcely mastering zero. Mark our words: it's the start of a new Ice Age. As noted belletrist Arnold Schwarzenegger counseled in the seminal 1997 movie Batman & Robin, "My name is Freeze. Learn it well. For it is the chilling sound of your doom!"