formula 0ne s japanese grand prix due to take place in october has been cancelled because of a rise of covid cases in the country. f1 says the decision to cancel it was taken by the japanese government. the revised calendar for the season will be revealed in the coming weeks. when you think of knights in shining armour, you no doubt think of medieval europe. pitch battles involving broad swords, chain mail and lances. now, some of those conflicts are being re enacted, but in a venue you might not expect, as the bbc s tim allman explains. it was another age, another place, a time, we are told, of chivalry, honourand place, a time, we are told, of chivalry, honour and violence lots and lots of violence. now you can try it out for yourself, here in new york? central park. these are