17/09/2014

Global importance of pollinators underestimated

(Phys.org) —Declines in populations of pollinators, such as bees and wasps, may be a key threat to nutrition in some of the most poorly fed parts of the globe, according to new research.

Mystery of rare five-hour space explosion explained

Next week in St. Petersburg, Russia, scientists on an international team that includes Penn State University astronomers will present a paper that provides a simple explanation for mysterious ultra-long gamma-ray bursts—a ...

Dawn operating normally after safe mode triggered

(Phys.org) —The Dawn spacecraft has resumed normal ion thrusting after the thrusting unexpectedly stopped and the spacecraft entered safe mode on September 11. That anomaly occurred shortly before a planned communication ...

Glowing galaxies in telescopic timelapse

We often speak of the discoveries and data flowing from astronomical observatories, which makes it easy to forget the cool factor. Think of it—huge telescopes are probing the universe under crystal-clear skies, because ...

Repaired Opportunity rover readies for 'Marathon Valley'

With a newly cleared memory, it's time for Opportunity to resume the next stage of its long, long Martian drive. The next major goal for the long-lived rover is to go to Marathon Valley, a spot that (in images from orbit) ...

New concepts based on advances in animal systematics

The way in which most multicellular organisms have been classified has been the same for more than a century. Only recently have scientists developed the tools and knowledge to question the way we classify organisms. The ...

Cape Cod saltmarsh recovery looks good, falls short

After decades of decline, grasses have returned to some once-denuded patches of Cape Cod's saltmarshes. To the eye, the marsh in those places seems healthy again, but a new study makes clear that a key service of the marsh ...

Flying robots will go where humans can't

There are many situations where it's impossible, complicated or too time-consuming for humans to enter and carry out operations. Think of contaminated areas following a nuclear accident, or the need to erect structures such ...

Fly ash builds green cement mixture

An eco-friendly cement, known as Alkali Pozzolan Cement (APC), containing a mixture of fly ash, dry lime powder and sodium sulphate under specific scaffolding conditions has been developed by Curtin University research.

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