Human adhesives are famed for their fallibility. Gooey glues soon lose their grip, are easily contaminated and leave residues behind. But not gecko feet. Geckos can cling on repeatedly to the smoothest surfaces thanks to the self-cleaning microscopic spatula-shaped hairs (setae) that coat the soles of their feet. ack in 2002, Kellar Autumn found that these dry hairs are in such intimate contact with surfaces that the reptiles ‘glue’ themselves on by van der Waals forces with no need for fluid adhesives. More recent studies had suggested that geckos might benefit from additional adhesion in humid environments through capillary action provided by microscopic droplets of water sandwiched between setae and the surface. |  |
 | A team of researchers reports Friday that huge tooth marks on T. rex bones indicate the ancient giants may have cannibalized one another. «They’re the kind of marks that any big carnivore could have made, but T. rex was the only big carnivore in western North America 65 million years ago,» Nicholas R. Longrich of Yale University said in a statement. |
Durante una exploración herpetológica en el Chocó Colombiano y enmarcado dentro del proyecto internacional Ranas Perdidas con el apoyo de USFWS (Wildlife without borders), el equipo de la expedición compuesto por Alonso Quevedo, Felipe Barrera, Uberney Garcia, JuanCarlos Luna, Luis Rubelio Garcia (Fundación ProAves), Robin Moore (Conservación Internacional), Don Church, Wes Sechrest, Nikki Wickman (Global Wildlife Conservation) y Lucy Cooke (periodista), hallaron 3 especies probablemente nuevas para la ciencia, especies muy raras y endémicas del Chocó. |  |
 | It seems that Triceratops lived away from rivers, duck-billed dinosaurs dwelled near rivers, and T. rex was equally common everywhere, probably because the beast went wherever there was meat, researchers find. The age of dinosaurs was a time of giants, and near the end of this era, these behemoths often lived surprisingly close to one another in the coastal lowlands of North America. As such, vertebrate paleontologists Tyler Lyson and Nicholas Longrich at Yale University reasoned the titans might have divided the landscape among themselves, so as to not constantly butt heads. |
