Allan R.Banks paintings

Allan R.Banks paintings
Andrea Mantegna paintings

Gasoline prices have jumped by 10 cents to 20 cents a gallon in many Chicago service stations in the last two days.
And what's happening in the Windy City may signal a warning to the rest of the country, energy experts said today. It could be a tough summer, with energy supplies at last year's levels, or tighter.Calculate Gasoline Prices"This could set the stage for regional supply problems and significant price volatility," said John Cook of the federal Energy Information Administration.Combine that with California's electricity squeeze and here's a snapshot of how the summer might shape up:The West Coast can expect repeated rolling blackouts, and rising gasoline prices.