MADSION, Wis. -- The daughter of the founder of Earth Day says she doesn't think gasoline prices are too high.
Tia Nelson, the daughter of former U.S. Sen. Gaylord Nelson of Wisconsin, said "we pay less for a gallon of gas than anywhere else in the world. And if we paid what the Europeans paid we'd wouldn't be driving vehicles that got 12 miles a gallon."
She said that if there's a silver lining in the higher gas prices, it's that people are driving less and companies are being forced to think about being more efficient.
Saturday is the 37th annual observance of Earth Day -- the first without Gaylord Nelson, who died last July.
Tia Nelson said it's a bittersweet day for her family but added that they are grateful his legacy lives on.