Nueva evidencia arqueológica sugiere que los capuchinos brasileños han estado utilizando herramientas de piedra para abrir nueces de anacardo durante al menos 700 años, y el nuevo trabajo de investigación se pregunta si el comportamiento humano fue influenciado a través de ver a los monos.
articles
Frutas y verduras le dan la sensación de bienestar
Una investigación de la Universidad de Warwick indica que el consumo de más frutas y verduras puede aumentar sustancialmente los niveles de felicidad de las personas.
NASA eyes first-ever carbon-nanotube mirrors for CubeSat telescope
A lightweight telescope that a team of NASA scientists and engineers is developing specifically for CubeSat scientific investigations could become the first to carry a mirror made of carbon nanotubes in an epoxy resin.
Led by Theodor Kostiuk, a scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, the technology-development effort is aimed at giving the scientific community a compact, reproducible, and relatively inexpensive telescope that would fit easily inside a CubeSat. Individual CubeSats measure four inches on a side.
Small satellites, including CubeSats, are playing an increasingly larger role in exploration, technology demonstration, scientific research and educational investigations at NASA. These miniature satellites provide a low-cost platform for NASA missions, including planetary space exploration; Earth observations; fundamental Earth and space science; and developing precursor science instruments like cutting-edge laser communications, satellite-to-satellite communications and autonomous movement capabilities. They also allow an inexpensive means to engage students in all phases of satellite development, operation and exploitation through real-world, hands-on research and development experience on NASA-funded rideshare launch opportunities.
Horrible florecimiento de algas en Florida
Un centenar de millas al norte de Miami, en la costa del Atlántico, la ciudad de Stuart es una pintoresca comunidad frente al mar, con hogares, restaurantes y parques con vistas al estuario St. Lucie. Sin embargo, en muchas áreas ahora, cuando se acerque el agua, lo primero que se nota es el olor.
How Growing Sea Plants Can Help Slow Ocean Acidification
Researchers are finding that kelp, eelgrass, and other vegetation can effectively absorb CO2 and reduce acidity in the ocean. Growing these plants in local waters, scientists say, could help mitigate the damaging impacts of acidification on marine life.
Oregon’s picturesque Netarts Bay has long been known for its oysters. But Netarts, like the whole west coast of North America, is getting more acidic. And the oysters don’t like it.
Since the Industrial Revolution, carbon dioxide in the air has seeped into ocean waters and boosted acidity by 30 percent. Globally, the oceans’ pH has dropped from 8.2 to 8.1, and could drop another 0.4 units by the end of the century. The problem is worse off the west coast of North America, where acidic bottom-waters are brought up to the surface by onshore winds. Corrosive waters like those suck up the building blocks for shells, and can literally eat away at the skeletons of corals.
Weathered oil from DW Horizon spill may threaten fish embryos and larvae development
A research team led by scientists at the University of California, Riverside and the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science have found that ultraviolet light is changing the structure of the Deepwater Horizon (DWH) oil components into something more toxic, further threatening numerous commercially and ecologically important fishes. The DWH oil spill, in which more than three million barrels of crude oil got released in 2010 into the northern Gulf of Mexico, is the worst oil disaster in US history, contaminating the spawning habitats for many fishes.
"Ours is the first experiment evaluating the effects of DWH oil on the genetic responses of mahi-mahi embryos and larvae," said Daniel Schlenk, a professor of aquatic ecotoxicology, who led the study published in Environmental Science and Technology. "It is also the first experiment of this nature on a lifestage and species that was likely exposed to the oil. We found that the weathering of oil had more significant changes in gene expression related to critical functions in the embryos and larvae than the un-weathered oil. Our results predict that there are multiple targets of oil for toxicity to this species at the embryonic life stage."