Bovine tuberculosis shows genetic diversity throughout Africa

Bovine tuberculosis (BTB) is an infectious disease caused by Mycobacterium bovis that affects cattle as well as other animals and humans. Now, by combining genotyping M. bovis samples from cows across African countries, researchers have been able to study the diversity and evolution of the disease.

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Hunter-gatherers have a special way with smells

When it comes to naming colors, most people do so with ease. But, for odors, it's much harder to find the words. One notable exception to this rule is found among the Jahai people, hunter-gatherers living in the Malay Peninsula. For them, odors are just as easy to name as colors. Now a new study suggests that the Jahai's special way with smell is related to their hunting and gathering lifestyle.

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North, east, south, west: The many faces of Abell 1758

Resembling a swarm of flickering fireflies, this beautiful galaxy cluster glows intensely in the dark cosmos, accompanied by the myriad bright lights of foreground stars and swirling spiral galaxies. A1758N is a sub-cluster of Abell 1758, a massive cluster containing hundreds of galaxies. Although it may appear serene in this NASA/ESA Hubble Space Telescope image, the sub-cluster actually comprises two even smaller structures currently in the turbulent process of merging.

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Meteoritic stardust unlocks timing of supernova dust formation

Dust is everywhere -- not just in your attic or under your bed, but also in outer space. To astronomers, dust can be a tool to study the history of our universe, galaxy, and Solar System. For example, observations indicate that type II supernovae -- explosions of stars more than ten times as massive as the Sun -- produce copious amounts of dust, but how and when they do so is not well understood.

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College branding makes beer more salient to underage students

Major beer companies have rolled out marketing campaigns and products -- such as 'fan cans,' store displays, and billboard ads -- that pair beer with university colors, mascots, and logos. Research shows that such campaigns may enhance the motivational significance of marketed beer brands, especially for students who identify strongly with their university. The researchers conclude that this effect could potentially increase underage students' alcohol consumption.

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Flu may be spread just by breathing

It is easier to spread the influenza virus (flu) than previously thought, according to a new study. People commonly believe that they can catch the flu by exposure to droplets from an infected person's coughs or sneezes or by touching contaminated surfaces. But, new information about flu transmission reveals that we may pass the flu to others just by breathing.

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