Astronomers harnessing the combined power of NASA's Hubble and Spitzer space telescopes have found the faintest object ever seen in the early universe. It existed about 400 million years after the big bang, 13.8 billion years ago.

The team has nicknamed the object Tayna, which means "first-born" in Aymara, a language spoken in the Andes and Altiplano regions of South America.

Though Hubble and Spitzer have detected other galaxies that are record-breakers for distance, this object represents a smaller, fainter class of newly forming galaxies that until now had largely evaded detection. These very dim objects may be more representative of the early universe, and offer new insight on the formation and evolution of the first galaxies.

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Climate change is likely to have far-reaching impacts on food security throughout the world, especially for the poor and those living in tropical regions, according to a new international report that includes three co-authors from the National Center for Atmospheric Research (NCAR).

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It's not just Indonesia's forests and peatlands that are burning - the Amazon is suffering almost as badly, with over 18,000 fires last month in Brazil alone, write Jos Barlow & Erika Berenguer. The future is looking hot and fiery.

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Los desiertos de alimentos, esas grandes extensiones de zonas urbanas y rurales vacíos de fruta fresca y verduras, son una epidemia que va en aumento y que afecta a más de 23,5 millones de personas a nivel nacional en los EEUU. Afectan desproporcionadamente a los ocupantes pobres de los barrios de bajos ingresos, los desiertos de alimentos son el resultado de la falta de acceso a una alimentación saludable.

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Las baterías de uso industrial, conocidas como baterías de flujo, podrían un día poner en orden el uso generalizado de la energía renovable, pero sólo si los dispositivos pueden almacenar grandes cantidades de energía barata y alimentar la red cuando el sol no está brillando y los vientos están en calma. Eso es algo que las baterías de flujo convencionales no pueden hacer. Ahora, los investigadores informan que han creado un nuevo tipo de batería de flujo que utiliza la tecnología de iones de litio, el tipo usado para dispositivos portátiles...

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Watching a lot of TV and having a low physical activity level as a young adult were associated with worse cognitive function 25 years later in midlife, according to an article published online by JAMA Psychiatry.

Few studies have investigated the association between physical activity in early adulthood and cognitive function later in life. Coupled with the increasing prevalence of sedentary or screen-based activities, such as watching television, these trends are of concern for upcoming generations of young people.

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