Rail agency announces it will install better air filters, switch to cleaner fuelMetra announced Friday that it is installing more efficient air filters on its train cars and switching to cleaner fuel for its locomotives to help reduce commuter exposure to toxic diesel fumes.

Surcharge increase takes effect because of higher gas pricesStarting Tuesday, add 50 more cents to that initial charge. Sustained high gas prices have triggered an increase in the fuel surcharge, city officials announced. Because Chicago-area gas prices have topped $3.20-a-gallon for seven business

Cook County property tax bills won't be out until around Thanksgiving, meaning voters won't have sticker shock to fuel their anger toward politicians when they head to the polls Nov. 2.

Boeing working on hybrid plane to cut fuel use, noise, emissions OSHKOSH, Wis. — An electric airliner?

on everything from curing cancer to making the perfect fuel cell.