IQ And Genetics

It used to be thought that IQ was strictly determined by genetics.  After reading After the Bell Curve, do you believe that IQ is solely influenced by genetics?  Based on your readings, what advice would you offer to parents/caregivers/and educators in order to maximize IQ?

Read this article
https://www.nytimes.com/2006/07/23/magazine/23wwln_idealab.html?pagewanted=all&_r=1&