Archive: 04/27/2012

Solution to ancient rock puzzle posited

A superplume, or massive episode of volcanic eruptions that related to extensive melting of the Earth's mantle, could explain the puzzling reappearance of major iron formations long after the rise in atmospheric ...

Apr 27, 2012 5 / 5 (2) 0

Landsat satellites see Texas crop circles

( -- A water-rich polka dot pattern takes over the traditional rectangular patchwork of fields in this time series animation of 40 years of Landsat images. In the dry Texas panhandle near the town of Dalhart, this ...

Apr 27, 2012 3.3 / 5 (3) 1