Graphene is the dark material that could change electronics. But its discoverers want the fans to take a deep breath and calm down. TWO INCHES thick, five feet square and 380 feet above sea level, the Walk of Faith is a plate of glass embedded in the floor of the observation gallery atop Blackpool Tower. It provokes a range of reactions. Some eye the dare from 'a safe distance' and step gingerly around and across it; others stride straight onto the glass and gave it some trampoline treatment. Still, it's all perfectly safe because, the Tower's owners assert, the glass can support the weight of five baby elephants, assuming you could get them into the lift in the first place.
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