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The generation of energy by fossil-fuel alternatives such as wind and solar power is becoming more and more practical. A major hurdle in switching to alternative energy sources is that many of them, such as wind and solar power, are intermittent. Methods for storing energy during times of surplus production, to be used when demand exceeds supply, is an essential part of an alternative energy economy. Much scientific and engineering effort is going toward this goal.… Read the rest “Storing Energy to save earth”

The Ponte Morandi before collapse View More

Ponte Morandi, Genoa. The tower on the left, and the adjacent roadway, collapsed on August 14, 2018. Picture attribution: Salvatore1991

A terrible tragedy occurred in Genoa, Italy on August 14, 2018. A suspension bridge in that city, part of the A10 motorway, collapsed into the bed of the Polcevera River, 150 feet below. Forty-three people who were driving over the bridge were killed.

The cable-stayed bridge

The bridge in Genoa, called the Ponte Morandi after its designer, Riccardo Morandi, was opened in 1967.… Read the rest “The Death of Ponte Morandi”