The World Athletics Championships begin in Beijing, China today. Jamaican superstar Usain Bolt will make his bow in the 100 metres heats on the opening day. Briton Mo Farah will bid for an unprecedented sixth consecutive global track distance title in the 10,000 metres.The opening day's action today will feature three medal events.17 Indian athletes will be seen in action in the Championships. The Indian team, comprising 10 women and 7 men, will be competing in nine events.