A HUGE chunk of the Earth’s crust is MISSING – and experts now know why A LARGE chunk of the Earth equivalent to a billion years of rock formation is missing from our planet’s crust, and scientists finally understand why. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:NASA Moon landing: Why Apollo 11 proves 'we don't have to be doomed' if we work togetherCalifornia earthquake: The BIG ONE is OVERDUE 200 years, estimates scientist Michio KakuCalifornia earthquake: Magnitude 6.4 quake was strongest in 20 years - Was it the Big One?Ring of Fire map: Where did the California earthquake hit in the volcanic hotbed?Environment apocalypse: Shocking photos show how UK will look after climate changeCalifornia earthquake WARNING: 99 percent chance the BIG ONE will hit in 30 years