Complex sentence: In 2007 Taylor became a Professor at George Washington University in Washington D.C., lecturing on Public Health, and on July 7,2009, Mr Taylor once again returned to government as "senior advisor" to the Commissioner of the FDA.
Split into simpler sentences: In 2007 Taylor became a Professor at George Washington University in Washington D.C., lecturing on Public Health. On July 7,2009, Mr Taylor once again returned to government as "senior advisor" to the Commissioner of the FDA.