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Wednesday, December 3, 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News

Clue to why females live longer than males

Posted: 01 Dec 2014 09:51 AM PST

Male flies die earlier than their female counterparts when forced to evolve with the pressures of mate competition and juvenile survival. The results could help researchers understand the mechanisms involved in aging.

Ground-based detection of super-Earth transit paves way to remote sensing of exoplanets

Posted: 01 Dec 2014 07:03 AM PST

Astronomers have measured the passing of a super-Earth in front of a bright, nearby Sun-like star using a ground-based telescope for the first time. The transit of the exoplanet 55 Cancri e is the shallowest detected from the ground yet. Since detecting a transit is the first step in analyzing a planet's atmosphere, this success bodes well for characterizing the many small planets that upcoming space missions are expected to discover in the next few years.

New substance overcomes treatment-resistance in leukemia

Posted: 28 Nov 2014 08:13 AM PST

Haematologists have developed a new active substance that effectively combats the most aggressive forms of Philadelphia chromosome-positive leukemia.

Genomes of malaria-carrying mosquitoes sequenced

Posted: 27 Nov 2014 06:23 PM PST

Scientists have sequenced the genomes of 16 Anopheles mosquito species from around the world. Anopheles mosquitoes are responsible for transmitting human malaria parasites that cause an estimated 200 million cases and more than 600 thousand deaths each year. However, of the almost 500 different Anopheles species, only a few dozen can carry the parasite and only a handful of species are responsible for the vast majority of transmissions.

The mysterious 'action at a distance' between liquid containers

Posted: 26 Nov 2014 07:38 AM PST

For several years, it has been known that superfluid helium housed in reservoirs located next to each other acts collectively, even when the channels connecting the reservoirs are too narrow and too long to allow for substantial flow. A new theoretical model reveals that the phenomenon of mysterious communication 'at a distance' between fluid reservoirs is much more common than previously thought.

Prehistoric conflict hastened human brain's capacity for collaboration

Posted: 26 Nov 2014 06:42 AM PST

Warfare not only hastened human technological progress and vast social and political changes, but may have greatly contributed to the evolutionary emergence of humans' high intelligence and ability to work together toward common goals, according to a new study.

Converting human-generated waste into fuel in space

Posted: 25 Nov 2014 12:46 PM PST

Who would've known human waste could be used to propel spacecraft from the moon back to Earth? Researchers responded to the call from NASA and came up with a process to convert waste to methane and propel spacecraft to Earth.

System reveals how our brains, bodies change as we fall asleep

Posted: 20 Nov 2014 12:39 PM PST

A system to accurately track the dynamic process of falling asleep has been developed, something has not been possible with existing techniques. In their report, the research team describes how combining key physiologic measurements with a behavioral task that does not interfere with sleep onset gives a better picture of the gradual process of falling asleep.

Gut microbiota influences blood-brain barrier permeability

Posted: 19 Nov 2014 11:22 AM PST

Our natural gut-residing microbes can influence the integrity of the blood-brain barrier, which protects the brain from harmful substances in the blood, a new study in mice shows. The blood-brain barrier is a highly selective barrier that prevents unwanted molecules and cells from entering the brain from the bloodstream.

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