Poco y poco…
If you think YOUR research project took some time, or you never finished your degree, there’s still time. UNAM last week granted a doctorate in biological sciences to Concepción Torres Villarreal after successfully defending her dissertation, La enseñanza de la biología en el nivel medio superior (bachillerato) [Teaching high school biology].
You want it fast, or you want it right? Photo of Dra. Torres UNAM, published in La Jornada
What’s remarkable is the amount of field research (and, in a very dangerous environment) that was required. Doctora Torres graduated with a biology teachers’ cerificate in 1949, then began her research… teaching biology at the Escula National Prepatoria until 1976 when she took her pension… but continued her research for another 18 years (until 1995) at the Colegio de Bachilleres — and then finally sat down to do put the research notes and documents into order, read the literature, write the thesis… and she’s only 88.
mexfiles.net 
Yay!
Good for Doctora Torres! I hope her family and friends threw a huge celebration for her.