American Geophysical Union

Climate change threatens permafrost in soil

In the coming century, permafrost in polar regions and alpine forests in the Northern Hemisphere may thaw rapidly, potentially releasing carbon and nitrogen that could cause additional regional warming. Permafrost occurs ...

Sep 20, 2012 4.2 / 5 (5) 2

African dust forms red soils in Bermuda

In Bermuda, red iron-rich clayey soil horizons overlying gray carbonate rocks are visually stunning topographical features. These red soils, called terra rossa, are storehouses of information not only on past local processes ...

Sep 20, 2012 not rated yet 0