This week, we’re looking at science stories driving headlines and causing conversation. We’ll speak to particle physicist James Pinfold about recent experiments that cast doubt on a possible explanation for dark matter, and new research that he’s conducting at the world’s largest experimental facility, the Large Hadron Collider. On the podcast, molecular pharmacologist David Kroll returns to explain the connection between high-caffeine energy drinks and health complications. And we’ll get some insight on the tension between societal conceptions of gender and the more nuanced reality, from Joel Baum, Director of Education and Training at Gender Spectrum.