ENN
Environmental News Network -- Know Your Environment
Los investigadores de nuevas baterías coinciden en que una de las posibilidades más prometedoras para la futura tecnología de baterías es la batería de litio-aire (o litio-oxígeno), que podría proporcionar tres veces más energía, para un peso determinado, que la tecnología actual, las baterías de iones de litio. Pero las pruebas con diversos enfoques para crear tales baterías han producido resultados contradictorios y confusos, así como controversias sobre cómo explicarlos
The world’s oceans possess vast, untapped potential for sustainable aquaculture, say UCSB marine scientists.
Even after so many years of doing field work, sometimes you are still left amazed. Because every now and then the stars all align, and everything works out exactly as you hoped it would. Today was one of those times, because we found that needle in the haystack.
A global analysis of rainfall and rivers by UNSW engineers has discovered a growing pattern of intense flooding in urban areas coupled with drier soils in rural and farming areas.
Amphibians can evolve increased tolerance to pesticides, but the adaptation can make them more susceptible to parasites, according to a team that includes researchers at Rensselaer Polytechnic Institute. The research, led by Binghamton University, showed that wood frogs that evolved increased tolerance to pesticides showed greater susceptibility to a dangerous virus, although they also demonstrated reduced susceptibility to a parasitic worm.
“We have only recently begun to understand that amphibians can rapidly evolve tolerance to chemicals like pesticides, which on the surface is good news,” said Rick Relyea, a professor of biological sciences and director of the Darrin Fresh Water Institute at Rensselaer. “But now comes the bad news: with that tolerance there is a tradeoff, which is that they become more susceptible to parasites that, in the case of ranavirus, can wipe out entire amphibian populations.”
Until now, live insects have been too wriggly to make good subjects for scientists wanting to understand more about insect innards. But an interdisciplinary team of biologists and imaging specialists from Western has worked out a novel micro-imaging solution that’s leading to unprecedented new ways of viewing insect development.
