An 1851 ink-and-watercolor gift drawing titled A Type of Mother Hannah’s Pocket Handkerchief by Polly Jane Reed, a Shaker in New Lebanon, New York. Andrews Collection, Hancock Shaker Village, ...

A 400,000-year-old site excavated in England reveals signs of deliberate fires made using the mineral iron pyrite to produce sparks. The question of where eddies come from is immortalized in verse, ...

The use of solar power in irrigation raises concerns about sustainable groundwater extraction. However, an empirical study from Bangladesh shows that the energy source is just one piece of a larger ...

Beginning with its construction in the fourth century B.C. and continuing for more than 800 years, the Temple of Isis on the small island of Philae, set where the Nile flowed out of Nubia, was visited ...