Tuesday, September 28

serpientes

dinosaurios, Espacio, Extinción Masiva, Noticias, serpientes, Tendencias

A reptile survived the meteorite that killed the dinosaurs | Digital Trends Spanish

The fall of the meteorite that extinguished the dinosaurs and other large vertebrates had a survivor that is still present today. A new study has revealed that snakes already existed more than 66 million years ago. The study published in Nature by a group of scientists explains that snakes are one of the few animals that survived the mass extinction, which took 76 percent of the existing species. The cataclysm created new spaces for the snakes, which had a free way to expand to other places and continents. Not only that, but that expansion was also reflected in the appearance of new subspecies or lineages, beyond the six that survived the event. This is what scientists call creative destruction, a concept that can be read contradictory but that postulates that the destruction of one ...
central nuclear, Fukushima, fusion, japon, Noticias, planta nuclear, radiación, serpientes, serpientes rata, Tendencias, Terremoto de Japón

Snakes help measure radiation in Fukushima | Digital Trends Spanish

A study shows that snakes living in the Fukushima exclusion zone could be useful for measuring radiation levels, a result of the meltdown disaster at the plant's nuclear power plant in 2011. The researchers believe that the snakes could serve as a kind of live monitors of these levels, aided by GPS and VHF tags. The species chosen for this mission is the rat snake, which is abundant in Japan and usually travels short distances and accumulates high levels of radionuclides. "Snakes are good indicators of environmental pollution because they spend a lot of time in and on the ground," says study author James C. Beasley. Hanna Gerke."They have small ranges, are large predators in most ecosystems, and tend to be relatively long-lived species." The team managed to capture nine of these snakes ...
antenas, células, especies, Noticias, organos, oscuridad, presas, radiacion infrarroja, señales, serpientes, Tendencias, ver

How snakes see so accurately in the dark | Digital Trends Spanish

Some species of snakes are capable of finding their prey with incredible ease and precision, even in the middle of the darkest night. How they did it was anyone's guess, until now. A group of researchers has discovered how they are able to convert the heat of organisms in their environment into electrical signals, which would allow them to "see" in the dark. The study, which was published in the journal Matter, offers a new explanation for this process, building on the previous work of researchers to induce pyroelectric qualities in soft materials, which would allow them to generate an electrical charge in response to mechanical stress. Thus, the authors estimate that electrical activity is likely involved in allowing snakes to detect their prey with such skill. Although they have...