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Has seleccionat: gener 2008

30/01/2008: El mal d'esquena

Escrit per: Equip Editorial
D'un dia per l'altre, l'Amina, una nena de 13 anys, descobreix que té la columna desviada 90 graus. A l'hospital de Sant Joan de Déu l'operen amb èxit. Li han posat un ferro que li aguanta l'espina dorsal.
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Categoria: English
Escrit per: Equip Editorial
Wool is an ideal insulator. This is why sheep must be sheared in the summer; otherwise they would be so hot that they might not even be able to reproduce. Today other lipids, called ceramides, very similar to those found in human skin, have been found in wool. Wool is also good for keeping houses warm. “Who-What-How” visits a wooden house in Lleida whose walls are lined with xisqueta wool, from sheep bred in the Lleida Pyrenees. .
Categoria: English
Escrit per: Equip Editorial
Volcanoes and lava are the main attractions of Tenerife, the largest of the Canary Islands. A volcanic explosion is very similar to what happens when you open a bottle of a carbonated soft drink or champagne. Accompanied by a Teide National Park guide, “Who-What-How” looks at the island’s lava and explores the world’s biggest lava tubes. .
Escrit per: Equip Editorial
Mostrem com es pot fer ciència fent riure a la vegada. Amb diverses exemples i amb el títol genèric "IgNobel, riure amb la ciència", que fa referència als premis IgNobel, uns guardons que tenen com a premissa fer pensar després de fer riure.

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Categoria: English
Escrit per: Equip Editorial
The funds needed to finance the space industry are so astronomical that only big agencies like NASA and ESA, or multinational companies, can afford to invest in them. An international team of students and engineers from the Polytechnic University of Catalonia (UPC) is developing a project to launch a satellite into space for less than 1200 euros. The challenge is part of the “N-Prize” contest to encourage low-cost space technology.
Joshua Tristancho and his team have presented this project which uses a helium-inflated weather balloon to slowly lift a launcher 35 km into space. From there a rocket lifts off in two stages. The first stage soars to a distance of 270 km and reaches a speed of 2.7 km/s. The second stage launches the satellite into orbit at a speed of 7.7 km/s, that is, nearly 30,000 km/h, 22 times the speed of sound.
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