Among the host of international athletes making their final preparations at the Aviva London Grand Prix is one of the hottest favourites for Olympic gold - Australian 100m hurdler Sally Pearson. How will the international superstars cope with ‘traditional’ British summer weather? Team USA sprinter Carmelia Jeter, world triple jump champion Christian Taylor and former world 5000m champion Bernard Lagat join Eleanor Oldroyd to give their views. Chinese hurdler Liu Xiang reveals the weight of expectation on him this year. Concerns over security, funding, transport and ticket sales – sound familiar? Clive James paints a picture of the Sydney Games in “Even As We Speak”. The Olympic motto is ‘faster, higher, stronger’, 5 Live and BBC World Service investigate how much this pinnacle of physical prowess has been enhanced by modern technology? Ivory Coast sprinter Murielle Ahoure speaks about her return to form and the legendary Michael Johnson carries the torch at Stonehenge.