There are some things no one should be able to Google It's why the UK Government is getting tech companies together next week to look at what more needs to be done to tackle child sexual abuse online. This is a significant challenge, and as an established player Google has a responsibility to take a lead. We have co-funded the Internet Watch Foundation for the last nine years. The women and men at the IWF do critically important work that few of us could stomach--proactively identifying child abuse images that Google can then remove from our search engine. We also work with Interpol and the National Center for Missing and Exploited Children (NCMEC) in the United States, amongst others. And since much of this illegal material is circulated repeatedly - making the crime infinitely worse for the victims - we have built technology that trawls other platforms for known images of child sex abuse. We can then quickly remove them and report their existence to the authorities. I'm often asked why Google - with its powerful search technology and army of brilliant computer scientists - can't simply find and block every child abuse image on the Internet. Given that our engineers have just built cars that can drive themselves, it's a good question. But here's the reality. While computers can detect the colour of naked flesh, only humans can effectively differentiate between innocent pictures of children and images of abuse. And even humans don't get it 100 per cent right. I recently read an old story in the British press about a family that had taken their photos to the pharmacy for printing. At the end of the film were some pictures of their three-year-old daughter lying on her tummy in front of the fire after a bath. The first the family heard that the film had been handed over to the police was when investigators arrived at their home. But we are committed to doing everything possible to stop the distribution of this awful content. As the Internet minister and campaigner on this issue, Ed Vaizey, said last week: "We must take every possible step to prevent their production and distribution over the internet ... that means using industry, law enforcement and the charitable sector." So Google has announced a £1 million grant that will help more than double the number of people at the IWF proactively searching the web for this material. Because this problem crosses international borders, we are also giving $1 million to NCMEC, who have a global role in tackling online child abuse and rescuing its victims. We are providing additional support to similar organisations in Brussels, Canada, Australia, and Latin America. While there is no simple technological fix, technology can really help. In 2006, we joined the Technology Coalition to team up with other companies on technical solutions for the industry. Since then, we've provided NCMEC and several global partners with software and hardware to fight abuse and help locate missing children. Since 2008, we have used "hashing" technology to tag known child sexual abuse images, allowing us to identify duplicate images which may exist elsewhere. Each offending image in effect gets a unique fingerprint that our computers can recognize without humans having to view them again. Recently, we have started working to incorporate these fingerprints into a cross-industry database. This will enable companies, law enforcement, and charities to better collaborate on detecting and removing child abuse images. Today we've also announced a $2 million Child Protection Technology Fund to encourage the development of ever more effective tools. Google is in the business of making information widely available, and we've always supported freedom of expression. But there can be no free speech when it comes to images of child sexual abuse. Sadly, society hasn't been able to stop their creation. But we must all work together to ensure they're not available online - and that when people try to share this disgusting content they are reported and prosecuted.