Lynnell Stephani Long, an intersex woman, educator and activist, will present "Intersex 101" on Oct. 23 at 7 p.m. in the University of Colorado at Boulder. Intersexuality refers to the medical diagnoses of people born with anatomical sexual variations, or mixed male and female sexual characteristics. The talk will be in the MCD Biology Building, room A2B70. An intersex child, Long was given a male identity but suffered due to emerging female traits. Later, she committed herself to educating others about intersex conditions.