Boeing’s new 777X airplanes led the Dubai Air Show’s opening day. The company claims orders of roughly $95 billion, purported to be the largest product launch in the history of commercial aviation.

Far too many doctors in the U.S. prescribe brand-name drugs when generics can be dramatically cheaper. When it comes to lower-income Medicare patients, it can be the taxpayer who covers the difference in price — up to hundreds of millions of dollars a year. ProPublica senior reporter Tracy Weber has been gathering data about the cost of prescription drugs to the taxpayer, and tells Marketplace Morning Report host David Brancaccio what she found.