Josep M. Trigo-Rodriguez Ae Frans J. M. Rietmeijer Ae Jordi Llorca Ae Diego Janches Originally published in the journal Earth, Moon, and Planets, Volume 102, Nos 1-4. DOI: 10. 1007/s11038-008-9228-0 Springer Science+Business Media B. V. 2008 This volume is a compilation of articles that summarize the most recent results in meteor, meteoroid and related ?elds presented at the Meteoroids 2007 conference held in the impressive CosmoCaixa Science Museum in Barcelona, Spain. The conference took place between 11 and 15 of June and was organized by the Institute of Space Sciences (Consejo Superior de Investigaciones Cient?'?cas, CSIC) and the Institut d'Estudis Espacials de Catalunya (IEEC). Researchers in meteor science and supporting ?elds representing more than 20 countries participated at this international conference where 126 presentations were delivered in oral and poster forms. The 69 papers included in this volume represent the work of 154 authors from about 70 different institutions across the globe. The Me- oroids conference is an international meeting that takes place every 3 years since the ?rst one held in Bratislava, Slovakia in 1994. The 2007 meeting was the ?rst one where samples of a comet, 81P/Wild 2, were available from the NASA Stardust mission, and results from laboratory characterizations were presented and discussed. Seemingly aware of the upcoming meeting a bolide was observed over La Mancha, Spain, on May 10.

Las ultimas decadas han visto un inusitado progreso en la miniaturizacion de algunos dispositivos de uso comun, como los telefonos moviles, los ordenadores o los reproductores de musica, pero el limite sigue marcado por el peso y el tamano de las baterias. El futuro parece estar en las pilas de combustible, en las que se genera electricidad de manera eficiente y limpia a partir del hidrogeno y otros compuestos. Las posibilidades de las pilas de combustible parecen infinitas y abarcan campos tan dispares como la automocion o el diseno de viviendas sostenibles.