Cienciaaonatural

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Luis Azevedo Rodrigues

Paleontologist (PhD); Science writer/blogger

SCIENCE AND MEDIA

Peep Show. BIODIVERSITY. December 2009: Second Snowiest on Record in the Northern Hemisph. England Buried In Snow – image from The Times According to the Rutgers University Global Snow Lab, last month had the second greatest December Northern Hemisphere snow cover since records were started in 1966. Snow extent was measured at 45.86 million sq. km, topped only by 1985 at 45.99 million sq. km. North America set a record December extent at 15.98 million sq. km, and the US also set a December record at 4.16 million sq. km. Giant Spider Species Discovered in Middle Eastern Sand Dunes. Scientists have unearthed a completely new species of spider hiding in sand dunes on the Israel-Jordan border.

Giant Spider Species Discovered in Middle Eastern Sand Dunes

With a legspan that stretches 5.5 inches, the spider, called Cerbalus aravensis, is the biggest of its type in the Middle East. “It is rare to find a new species of spider — at least around this part of the world — which is so big,” said biologist Uri Shanas of the University of Haifa-Oranim in Israel, who discovered the arachnid. No hay sitio para tanto lince. Por CLEMENTE ÁLVAREZ (SOITU.ES) Actualizado 23-10-2009 15:36 CET Pasados cuatro años desde que naciera el primer lince ibérico (Lynx pardinus) en cautividad, las jaulas de los centros del Programa de Conservación Ex-situ (fuera de su hábitat) están llenas de estos felinos.

No hay sitio para tanto lince

Son ya incluso demasiados para el espacio del que disponen. Pues con 76 animales (40 de ellos nacidos en cautividad), se ha superado antes de tiempo el número fijado como objetivo poblacional para comenzar las reintroducciones: 60 (30 hembras y 30 machos). Giant Salamanders Helped to Spawn.

EVOLUTION

Pássaros e jacarés respiram da mesma forma. Este método de respiração pode ter permitido aos antepassados destes animais serem mais resistentes e dominarem a Terra depois da extinção massiva ocorrida há 251 milhões de anos.

Pássaros e jacarés respiram da mesma forma

Depois da extinção que provocou a morte de 70 por cento da vida terrestre e 96 por cento da marinha, estes répteis – arcossauros – foram os animais que dominaram o planeta. Terá sido uma forte actividade vulcânica ou o impacto de um grande asteróide que provocou a catástrofe. Dressing Up Dinos. Pearltrees videos. Poder Simples. Help.

2009 paper confirming IPCC sea level conclusions withdrawn, mist. From the Guardian, finally some refreshing honesty in Science: Climate scientists withdraw journal claims of rising sea levels Study claimed in 2009 that sea levels would rise by up to 82cm by the end of century – but the report’s author now says true estimate is still unknown The Maldives – poster child for bad science Photograph: Reuters Scientists have been forced to withdraw a study on projected sea level rise due to global warming after finding mistakes that undermined the findings.

2009 paper confirming IPCC sea level conclusions withdrawn, mist