Mark McClusky says for elite athletes today, pushing boundaries and breaking records is all about "the aggregation of marginal gains."
A strong economy naturally depends on a large portion of the population earning money and sending it back into the economy. But the U.S. labor force has been shrinking since 2007, and according to a report by the White House Council of Economic Advisers, this is because baby boomers are reaching retirement age.
But critics disagree, saying that the weak economy has forced baby boomers to work longer to support their families. NPR’s Marilyn Geewax discusses the report and what it means for the economy with Here & Now’s Meghna Chakrabarti.