Top 100 books: Noomi Rapace in Millennium: The Girl With the Dragon Tattoo Photograph: Knut Koivisto

The Top-selling 100 books of all time (well, since Nielsen records begain in 1998) are published today. Download the data for yourself and see how they compare

Member of Royal Marines 4 Troop, Bravo Company, 40 Commando at Sangin in preparation for the handover to the Americans at the end of Op Herrick. Photograph: LA(PHOT) Si Ethell/PA

What is the human cost of the war in Afghanistan for British forces? As British troop deaths exceed 300, these are the latest figures - including new wounded and amputation statistics

Iraq Body Count deaths data: The ink-stained finger of an Iraqi soldier is seen as he stands guard after voting at a polling station in Baghdad. Picture taken in March this year. Photograph: Mohammed Ameen/Reuters

Iraq Body Count has produced its annual comprehensive look at deaths in Iraq, Download the data - and see how it compares to the Wikileaks war logs

Protests against the scrapping of EMA in Leeds. Photograph: John Baron/guardian.co.uk

Leeds has more students receiving Education Maintenance Allowance (EMA) than any other place in West Yorkshire.

When the numbers for all areas of England were highlighted earlier this month, it showed the region had the second highest number of claimants for EMA to help teenagers to stay at school or go to college – 29,318 in total.
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Sao Tome ... the land that tags forgot. Photograph: Armando Franca/AP

An end of year rundown of the countries we wrote about most – and least – in 2010

How many privately-educated students attend university? The education gap Photograph: Guardian

New research shows exactly how many people from privately-educated - and free school meals - backgrounds attend each university

Campaigners are fighting for the right to allow gay couples to get married, civil partnerships are the only legal recognition so far. Photograph: Sarah Lee for the Guardian

As campaigners fight for the right of marriage for gay couples, what are the figures for the Civil Partnership Act introduced in 2005?

Information is Beautiful on legalising drugs. Click image for full graphic. Illustration: David McCandless

What would happen if we legalised drugs? This is David McCandless' take

Winter weather: satellite image of a snow covered UK taken from a NASA satellite named Terra on Monday December 20, at 13:22. Click image for full picture

Simon Rogers The cold weather has swept across the UK. Find out which places are worst affected

OpenCorporates: Click here to go to the site

Chris Taggart explains how you can search for data on nearly 4m companies - and why it will change how we see business

New report predicts a bright future for Britain's offshore resources. Photograph: Murdo Macleod for the Guardian

Which EU countries are on track to reduce their energy consumption enough to meet EU targets for 2020? Fast visualisation provides an answer.

Boys struggling with literacy in England: below national curriculum level 3 in reading. Click image for full graphic

One in ten boys in England are struggling with literacy, below key stage 3, according to the latest primary schools data. Find out what the figures are where you live

Who pays? ... Tell us where you think the spending review axe will fall Illustration: Elke Hesser/Getty Images

Find out what is happening to wages in every country around the world.

Wikileaks Iraq: visualising the full text. Click image for full graphic

Jonathan Stray shows how AP developed a revolutionary approach to text as data

Data journalism and visualisation from the Guardian. Illustration: Lisa Villani for the Guardian

Today we launch a new gateway to our data journalism and visualisations - find out what's new at guardian.co.uk/data