CORRECTION: This story was updated on April 21, 2016, to clarify that the method described was not the first radical-based route to chiral quaternary carbon centers. The method is the first route ...

The properties of organic molecules are intimately related to their shape. In many structurally complex organic molecules, shape is influenced—or dictated—by the three-dimensional orientation of ...

After decades of debate an international body of earth scientists has formally agreed to move the boundary dates for the prehistoric Quaternary age by 800,000 years. The decision has been made by the ...

Climate change and the developments it spurs carry the narrative of the Quaternary, the most recent 2.6 million years of Earth's history. Glaciers advance from the Poles and then retreat, carving and ...

Analysis of more than 3,000 lithic artifacts from the Cova Gran de Santa Linya site (Les Avellanes-Santa Linya, Lleida) shows that anatomically modern human communities occupying the southern Pyrenees ...

The pandemic ushered in a cleaning frenzy at home, schools and work as many of us sprayed, wiped and disinfected our way through the crisis. But widespread use of disinfectants and heavy-duty cleaners ...