People across the USA (and now parts of Europe) are reporting unusual sunsets, the result of Russia’s Sarychev Peak volcano, which erupted on June 12, “hurling massive plumes of sulfur dioxide and other debris into the stratosphere. The white ripples that herald these sunsets are made of volcanic aerosols–a mixture of ash and sulfur compounds. Blue light scattered by fine volcanic aerosols combines with ordinary red sunset rays to produce the telltale lavender.” More at http://www.spaceweather.com