Flottant à la surface de l’eau, une couche sirupeuse de pétrole dépose une pellicule noire sur les roseaux de Pass-a-Loutre. Tout « est presque mort », constate Angelina Freeman, une scientifique venue
Une équipe de chercheurs chinois et américains publie cette semaine un article dans la revue PloS One qui confirme qu’il ne suffit pas de planter des arbres pour voir naître
Le volcan guatémaltèque Pacaya est entré en éruption et projette des cendres volcaniques à plus de 1500 mètres d’altitude. Etat de catastrophe naturelle déclaré : l’éruption a fait un mort
En attendant de reboucher le puits de pétrole qui fuit au large de la Louisiane, Google maps a imaginé une carte interactive, qui permet de projeter la nappe telle qu’elle
La découverte au Maroc de fossiles dans un état de préservation exceptionnel, datant de l’Ordovicien inférieur (-478 millions d’années), bouleverse les idées reçues sur la diversification initale des animaux au
Il s’agirait d’un traitement indolore et réversible. En effet, d’après les premiers résultats, les ultrasons émis au niveau des testicules permettraient d’arrêter la production de spermatozoïdes pendant une durée de
Il est l’un des premiers humains dont le génome ait été entièrement séquencé. Et ce n’est pas par hasard. John Craig Venter est l’un des pionniers du séquençage des génomes.
Les Sciences de la Vie et de la Terre au collège et au lycée. Découverte, actualité, cours, aide et soutien en ligne.
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