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| GRAVITY MAP SHOWS EARTH IS VERY LUMPY |
| Earth is a lumpy, squishy place - or so the newest, best-ever gravity map of the planet has revealed. |
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| ANCIENT TRAVELLERS USED HIGHWAYS, SPY PHOTOS SHOW |
| People of the Bronze Age traded and travelled more widely along a network of ancient highways in the the Middle East than previously thought, newly-released satellite images show. |
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| THE ARCTIC PERENNIAL SEA ICE COULD BE GONE BY END OF THE CENTURY |
| A NASA study finds that perennial sea ice in the Arctic is melting faster than previously thought--at a rate of 9 percent per decade. If these melting rates continue for a few more decades, the perennial sea ice will likely disappear entirely within this century, due to rising temperatures and interactions between ice, ocean and the atmosphere that accelerate the melting process. |
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| SATELLITES REVEAL A MYSTERY OF LARGE CHANGE IN EARTH'S GRAVITY FIELD |
| Satellite data since 1998 indicates the bulge in the Earth's gravity field at the equator is growing, and scientists think that the ocean may hold the answer to the mystery of how the changes in the trend of Earth's gravity are occurring. |
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