Opinions expressed by Forbes Contributors are their own. David Bressan is a geologist who covers curiosities about Earth. Research has shown the complex history behind this gap of missing time ...

Glacier ice has great erosive power removing almost ... They get cut off so while erosion makes the main valley deeper and deeper, the smaller valley is left hanging higher up above the valley ...

Without the erosive forces of water, wind, and ice, rock debris would simply pile up where it forms and obscure from view nature's weathered sculptures. Although erosion is a natural process ...

They identified an erosion rate of >4.1mm/yr for 2006 to 2011, which has approximately doubled from the estimated maximum of 2.2mm/yr during the Little Ice Age. Some isolated rock faces have even ...