Smoky Hill's Zainab Sanni poses March 15 at Smoky Hill High School in Aurora. (Heather L. Smith/Aurora Sentinel)

Life in Nigeria has changed a lot since Zainab Sanni called it home, but she returned for the first time in 12 years for an important purpose. The former track star at Aurora’s Smoky Hill High School — who was born in Nigeria and came to Colorado with her family when she was 9 — earned a chance to represent her native country at the upcoming Olympic Games in Rio de Janeiro.