Gas prices climbing again—$4.28/gallon nationwide, up from $4.14 just last week. That's a 14-cent jump in seven days.

This matters for consumer spending power and inflation expectations. When people spend more at the pump, they have less for everything else. Watch how this feeds into retail sales data and Fed rhetoric.

Energy costs have this nasty habit of showing up everywhere—transportation, manufacturing, food prices. The ripple effect is real.