Monthly Archive: April 2017

image 3985e EET 83309 320x320 - Scientists Find Tiny Pieces of Opal in Meteorite 0

Scientists Find Tiny Pieces of Opal in Meteorite

Small pieces of the mineral opal have been found within a brecciated ureilite meteorite from Antarctica. According to a team of scientists led by Prof. Hilary Downes of Birkbeck College London, UK, this find...

PT 320x320 - Earth probably began with a solid shell 0

Earth probably began with a solid shell

Today’s Earth is a dynamic planet with an outer layer composed of giant plates that grind together, sliding past or dipping beneath one another, giving rise to earthquakes and volcanoes. Others separate at undersea...

slide 211638 735522 free 320x320 - Craters show Earth is bombarded at random 0

Craters show Earth is bombarded at random

Do mass extinctions, like the fall of the dinosaurs, and the formation of large impact craters on Earth occur together at regular intervals? “This question has been under discussion for more than thirty years...

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First oceans may have been acidic

One way to understand how ocean acidity can change, for example, in response to rising carbon dioxide (CO2) levels, is to look to the history of seawater acidity. Dr. Itay Halevy of the Weizmann...