Death by volcano?

Death by volcano?

The discovery of anomalously high levels of mercury in rocks from the Ordivician geological period has led to a new interpretation of the ensuing mass extinction. A sequence of disturbances may have led to catastrophic cooling by reflective sulfate aerosols injected into the atmosphere by massive volcanism. The finding is important since aerosol cooling is under consideration as a way to temper global warming.
Examining the links between minimum wage changes, employment

Examining the links between minimum wage changes, employment

For the first time, a group of researchers at Washington University in St. Louis used a big-data approach to determine the effects of minimum-wage changes on business. The Olin Business School faculty processed wage data on more than 2 million hourly workers from across the country over a six-year period. The results? There are winners and losers.
The Flight of Icarus

The Flight of Icarus

The dream of flight has powered some of the world’s most ambitious feats of design and engineering. Last week, first-year architecture students put their own aeronautical experiments to the test, launching from the top of Art Hill in Forest Park.
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