What is it about video games that makes them so addictive? Do we play these things not because they are easy but because they are hard? How hard are they? We asked MIT mathetmaticians Erik Demaine and Alan Guo.

Can racism be treated with heart drugs? A recent study suggests so. Does this mean that we can alter a person's moral values with drugs? And what other possibilities are there for engineering the human condition? We ask Julian Savulescu.

Dogs were the first sentient beings to venture into space. Yet, they know surprisingly little about physics. Chad Orzel, professor of physics at Union College in upstate New York, hopes to redress this.

There are several ways that the public can contribute to the world of scientific exploration. We talk to David Baker and Chris Eibens how the networked computer game 'Foldit' is contributing to the development of new medical drugs.

US Republican presidential hopeful Newt Gingrich declared that if he were elected president, he would build a manned base on the Moon by 2020. Does this make him a visionary or a fantasist? We ask space guru and Royal Society Fellow, Mike Lockwood.

The Large Hadron Collider is working better than expected. And it's collected oodles of data. But have they found the Higgs, yet? We ask Davide Castelvecchi, who flew to Geneva to find out.

Within ten years of the first synthesis of LSD in 1938, it was being used to treat a range of psychiatric conditions, including addiction, anxiety and even headaches. It fell out of favour in the 60s. But the therapeutic use of LSD and other psychoactive drugs could be making a comeback.

In September, physicists announced results suggesting that beams of neutrinos were travelling from Switzerland to Italy at faster than the speed of light, in flagrant violation Einstein's Theory of Special Relativity. Was Einstein wrong? And what the hell is a neutrino anyway? We ask neutrino guru Dr Ryan Nichol.

IBM's BlueGene supercomputer can carry out a similar number of operations per second as the brain of a rat. But while a rat's brain takes up a half a cubic centimetre and uses 50 milliwatts of power, BlueGene covers around 600 square feet and uses 400 kilowatts of power. We ask neuroscientist Richard Wingate what we're doing wrong.

In 1929, Frigyes Karinthy wrote a short story suggesting that everyone is connected to everyone else by six or seven degrees of separation. In 1967, Stanley Milgrim did an experiment proving it. And twenty years later, Duncan Watts & Steve Strogatz build the mathematics to describe it. We talk to Samuel Hansen about why this means our friends are more popular than we are.