Dangerous Space Rocks

Remarkable movies of asteroids and a comet, made by Patrick Wiggins, serve to underline the findings of experts who gathered in Dramstadt, Germany to discuss reducing the danger posed by large Near-Earth Objects. [Comet 103/P Hartley 2, photographed by Patrick … Continue reading»

Grand Designs

The greatest nature writer, Henry David Thoreau, enunciated many startling insights in his 1854 masterpiece, Walden; Or, Life in the Woods. One of his most advanced ideas is in the penultimate chapter, Spring, where he describes rivulets of wet sand … Continue reading»