It is now a little easier for CTA Brown and Purple Line riders to get to the Blue Line. The Chicago Transit Authority extended the No. 93 California/Dodge bus route to the Logan Square Blue Line ...

The worldwide pandemic has threatened many of the businesses you rely on every day, but don’t let it take away your source for local news. Now more than ever, we need your help to ensure nothing but ...

The evolution of today’s Power over Ethernet (PoE) and Power over Data Line (PoDL) systems. The fundamental power delivery characteristics of PoE and PoDL and how these digitally integrated, ...

CHICAGO (WLS) -- The afternoon commute on the CTA Yellow Line is back to normal, after a train derailment earlier Tuesday. The Yellow Line runs from Chicago's far North Side to suburban Skokie.

This paper surveys econometric innovations related to differences-in-differences estimators and to event-study models with time-varying treatment effects. Our discussion highlights tricky ...