22/03/2010

Mapping Venus: Extreme makeover or plate tectonics?

(PhysOrg.com) -- Venus and Earth have long been thought of as sister planets. Given its similar size and proximity to Earth in the inner Solar System, Venus might seem like a promising candidate for having a surface that ...

Taming the wild phonon

(PhysOrg.com) -- Researchers at MIT and elsewhere have succeeded in creating a synthetic crystal that can very effectively control the transmission of heat -- stopping it in its tracks and reflecting it back. This advance ...

Supermassive black holes: hinting at the nature of dark matter?

(PhysOrg.com) -- About 23% of the Universe is made up of mysterious ‘dark matter’, invisible material only detected through its gravitational influence on its surroundings. Now two astronomers based at the National Autonomous ...

Iron-nitrogen compound forms strongest magnet known

(PhysOrg.com) -- A group of scientists from the University of Minnesota say that Fe16N2 crystals are more magnetic than the most magnetic material previously known, and its magnetism exceeds the predicted limit of magnetism ...

Learning about riparian areas from photographs

Riparian areas, ecosystems caught between the land and the stream, are subject to spatial and temporal variability. Effectively managing and protecting riparian areas as well as other ecosystems require understanding these ...

UN rejects Tanzania request for one-off ivory sale

(AP) -- A proposal by Tanzania to weaken the 21-year ban on ivory sales was rejected by a U.N. conservation meeting over fears the African country has been failing to crack down on rising incidents of poaching.

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