Maybe it's the switch from CDs to streaming music and movies. Or the transition from glass to plastic bottles.
But for the first time in Minnesota, the per capita production of garbage declined even as the economy was growing.
"We are seeing a decoupling of spending and waste generation," said Anna Kerr, a principal planner for the Minnesota Pollution Control Agency, which released a draft Waste Policy Report for the Minnesota Legislature on Friday.
"It is a good news waste story."
Waste typically declines during economic downturns, and in 2008 and 2009 that's what happened. Minnesota's waste output declined 4 percent and 5 percent in those years respectively.
In the past, when the economy popped back after a downturn, so did garbage.
But during and after the Great Recession something changed, the PCA found. In 2005, before the downturn, Minnesotans generated 34.2 tons of waste for every million dollars spent. But in 2013, that dropped to only 29.6 tons.
Kerr said the agency can't explain why the trendline turned, but called it "noteworthy."