Public debate on the effects of violent video games can become especially contentious in the wake of a rampage shooting, such as the recent killing of nine people in Munich. If it is later discovered the perpetrator was a fan of violent video games, as was the Munich killer, it is tempting to think that perhaps violent games'caused' the rampage shooting. But rampage shootings are rare and complex events caused by multiple factors acting together. One can't accurately predict a rampage shooting based on exposure to violent video games or any other single factor. Laboratory experiments are used to make firm and causal conclusions about violent video game effects.

DRUGS that change the chemistry and structure of the brain could boost the intelligence of people with Down's syndrome. Several compounds have improved memory and learning in a mouse version of the condition, suggesting that its cognitive effects can be changed. Until recently, this idea was unthinkable, says Mara Dierssen at the Centre for Genomic Regulation in Barcelona, Spain. Such efforts to improve brain function are controversial, with some activists saying people should be valued as they are. But some families have decided to give their children drugs like Prozac that have not yet been thoroughly tested for Down's syndrome.

It is a terrifying vision of the future of battle. Called RoBattle, this heavy duty combat and support robot is strapped with a'robotic kit' consisting of vehicle control, navigation, RT mapping and autonomy, sensors and mission payloads. In addition to ambushing and attacking on command, this combat ready platform, developed by Israel Aerospace Industries (IAI), can raise its body four feet in the air to tackle obstacles or crouch down 23 inches to hide from enemies. It may be focused on the sky, but Israel Aerospace Industries has stepped down on land to develop the newest member of its unmanned ground robotic systems family. RoBattle is a combat and support robot equipped with a'robotic kit' of vehicle control, navigation, RT mapping and autonomy, sensors and mission payloads RoBattle, is an semi-autonomous combat and support robot designed to assist ground soldiers in the field.

Apps like Tinder were designed to make the process of dating quicker and more efficient, by only matching people with other who are interested in them to save people from rejection. But new evidence suggests the apps have created a different kind of problem – men play Tinder like a game, swiping right to everyone just to see who has'liked' them. This can be frustrating for women, who are pickier about who they match with, since men they are paired with are less likely to reply to their messages, a new study has found. Evidence shows people on Tinder are not motivated enough to speak to someone they match with. Both men and women are unlikely to message even after mutually liking another profile, a new study has found.

Aliens may look like giant jellyfish with orange bottoms, a leading space scientist has claimed. Maggie Aderin-Pocock, a satellite expert and government adviser, said it is likely that there is extra-terrestrial life - it is just more alien than you'd imagine. Rather than being the little green men so beloved of Hollywood directors, they may look like football-field sized jellyfish, complete with onion-shaped appendages and an orange underbelly or bottom. Generated from silicon, rather than the carbon that is the basis of life as we know it, the creatures are able to live off light absorbed through their'skin' and chemicals sucked in through their giant mouths. In physical terms, for example, wings and eyes have independently emerged among animals through evolution at several different times over, and birds in ecologically isolated New Zealand have evolved behaviours typically seen in mammals elsewhere.

Amazon and Google might be focused on delivering packages in the sky, but one UK firm has set its sights on the ground. Starship Technologies has developed a fleet of six-wheeled'ground drones' that travel at four miles per hour and are capable of carrying 20 to 25 pounds of cargo. Deemed the first autonomous delivery robot, the technology is currently being tested in London and is now set to invade Austin, Texas in the United States. Starship Technologies has developed six-wheeled bots that travel at four miles per hour and capable of carrying 20 to 25 pounds of cargo. Unlike robots designed to resemble humans, the Starship's bot is purely functional with a large compartment to hold deliveries, the equivalent size of two grocery bags.

He is better known for wrestling with the mysterious forces that shape our universe and the existential threat posed by technology. But physicist Stephen Hawking now fears greed could be the undoing of the human race. The University of Cambridge professor has warned that the unequal divide of wealth between individuals and countries is one of the most divisive issues of our time. He claims envy and isolationism is being bred by the way money is currently shared and this may have contributed to the result of the European Union Brexit referendum result in Britain. Professor Stephen Hawking (pictured) has warned the sense of inequality that drove the Brexit vote was driven by the way wealth is viewed and shared in many parts of the world.

Nasa has announced that it has found evidence of flowing water on Mars. Scientists have long speculated that Recurring Slope Lineae -- or dark patches -- on Mars were made up of briny water but the new findings prove that those patches are caused by liquid water, which it has established by finding hydrated salts. Several hundred camped outside the London store in Covent Garden. The 6s will have new features like a vastly improved camera and a pressure-sensitive "3D Touch" display

Amazon plans to test its delivery drones in Britain, meaning customers in the UK could soon receive their packages from the internet giant by air, rather than post. The move is the result of a deal with the British government and could see customers in the UK trial the new service before those in the US. But experts have expressed fear that dangers drones could be hijacked and cause'disasters' if the proper controls are not put into place. Amazon plans to test its delivery drones in Britain, meaning customers in Britain could soon receive their packages from the internet giant by air, rather than post. One of the company's prototype drones is pictured Colin Bull, a consultant at Software Quality Systems, said despite the obvious benefits of drones, they ' must be embraced and feared in equal measures'.

It may be many men's dream to have Scarlett Johansson tend to their every need. But one man has come close to making this fantasy a reality by building a look-a-like robot. He now plans on sharing his designs in a handbook, so other fans can create their own sexy androids too. The life-size robot was created by Hong Kong designer Ricky Ma, based on a famous Hollywood actress. A 3D-printed skeleton lies beneath Mark 1's silicone skin, wrapping its mechanical and electronic parts.