If you're a college athlete who's talented enough to play a Division I sport, the NCAA requires that you get a blood test to see if you have sickle cell trait.
People with sickle cell trait carry one copy of a gene that can lead to an abnormal type of hemoglobin, the oxygen-carrying molecule in red blood cells. (Two copies of the gene lead to sickle cell disease.)
In the race for the Republican presidential nomination, former House Speaker Newt Gingrich continues to fend off accusations that he should wear the scarlet "L" — for "lobbyist." This week, he released two of his consulting contracts and said they didn't call for any lobbying.
Like many other former lawmakers, Gingrich was advocating for paying clients, while not officially registering as a lobbyist.
The two contracts disclosed this week came from Gingrich's work for Freddie Mac, the mortgage giant. Between 1999 and 2007, Freddie Mac paid his firm $1.6 million.