But he's also had more practice from the rough, averaging 3.3 shots per round from the tall stuff compared with 2.4 swings per round from there last season.

WSJ: Tiger Woods Should Credit His Return to No. 1 on Improved Putt

Federally funded scientists can also derive stem cells, after informed consent, from aborted fetuses, but this practice is not without controversy.

CNN: NIH publishes draft guidelines for stem cell research