Lance Armstrong appears to have brushed aside his involvement in the biggest doping scandal in sporting history, saying he's concentrating on charitable work through his Livestrong foundation for cancer awareness.
The US Anti-Doping Agency on Thursday accused Armstrong and his US Postal Service cycling team of "the most sophisticated, professionalised and successful doping programme that sport has ever seen".
Cycling's world governing body says it will closely examine USADA's report, and "endeavour to provide a timely response".
