You know you're having a bad day when you lose $150 billion in two hours. That's what happened to Facebook. Maryland Smith professor David A. Kirsch explains what went wrong.

Smith School experts bring you their fantasy M&A league — a list of potential tie-ups and explanations about what makes each one interesting. Imagine CVS teaming with 23andMe, or Daimler with Tesla, or Hilton with Airbnb.

Smith School professors David A. Kirsch and Brent Goldfarb examine the feasibility of futuristic plans for a 600 mph hyperloop between Washington, D.C., and Baltimore.