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Opinion
A New Tuskegee Experiment?
Lewis Margolis and Gregory Margolis ask whether encouraging young people to play football violates basic ethical standards, given both what is known and not known about the risks of concussions.
Opinion
19 Lessons About Teaching
Andrew Joseph Pegoda explains what you can and can't expect of students -- and how to promote learning in every class.
Opinion
Encountering Simone Weil
A documentary about the philosopher, mystic, and rebel is coming out on DVD. Scott McLemee hears from the director.