Marginal utility helps set product pricing; high initial satisfaction decreases with more units. Some stores use bulk pricing when consumers value additional items less. Progressive taxes assume each ...

If you have driven by the Expo Center these past few days, you are probably wondering what all that equipment is for.

Aggregate energy utility investments are projected to reach $227.80 billion in 2026, $233.30 billion in 2027 and $214.84 ...

Have a question about Philly’s neighborhoods or the systems that shape them? PlanPhilly reporters want to hear from you! Ask us a question or send us a story idea you think we should cover. A ...

It was 2:30 in the morning on Nov. 6, 2014, when flames engulfed the New Orleans home of political consultant Mario Zervigon. Someone had lit his cars on fire, and the flames spread to his house.

PITTSBURGH (KDKA) — Pittsburghers' gas and electric bills are likely showing some spikes after last month's winter blast. It may have some people wondering how they're going to afford to pay their ...