Earth

Milestone in chemical studies of superheavy elements

Milestone in chemical studies of superheavy elements

Penn research helps uncover mechanism behind solid-solid phase transitions

Penn research helps uncover mechanism behind solid-solid phase transitions

Two solids made of the same elements but with different geometric arrangements of the atoms, or crystal phases, can produce materials with different properties. Coal and diamond offer a spectacular example of this effect.

Tree rings and arroyos

Tree rings and arroyos

Boulder, Colo., USA – A new GSA Bulletin study uses tree rings to document arroyo evolution along the lower Rio Puerco and Chaco Wash in northern New Mexico, USA. By determining burial dates in tree rings from salt cedar and willow, investigators were able to precisely date arroyo sedimentary beds 30 cm thick or greater. They then combined this data with aerial imagery, LiDAR, longitudinal profiles, and repeat surveys to reconstruct the history of these arroyos.

Miranda: An icy moon deformed by tidal heating

Miranda: An icy moon deformed by tidal heating

Boulder, Colo., USA – Miranda, a small, icy moon of Uranus, is one of the most visually striking and enigmatic bodies in the solar system. Despite its relatively small size, Miranda appears to have experienced an episode of intense resurfacing that resulted in the formation of at least three remarkable and unique surface features -- polygonal-shaped regions called coronae.

NASA sees western edge of Tropical Storm Fung-Wong affecting Philippines

NASA sees western edge of Tropical Storm Fung-Wong affecting Philippines

The NASA-NOAA Suomi NPP satellite saw the western edge of Tropical Storm Fung-Wong over the central Philippines on Sept. 18. Fung-Wong developed on Sept. 17 as Tropical Depression 16W, and strengthened into a tropical storm by 5 p.m. EDT on Sept. 17.

Technique to model infections shows why live vaccines may be most effective

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How pneumonia bacteria can compromise heart health

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Human sense of fairness evolved to favor long-term cooperation

Posted By News On September 18, 2014 - 6:47pm
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Nuclear spins control current in plastic LED

Posted By News On September 18, 2014 - 6:46pm
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Changes in coastal upwelling linked to temporary declines in marine ecosystem

Posted By News On September 18, 2014 - 6:46pm
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