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Official kilogram has put on a little weight

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Over the years, the kilogram has added, well, a few grams. Not really whole grams, actually micrograms. But a group of scientists are trying to undo that weight gain because kilograms are one of the few units of measure still defined using physical artifacts.
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Fungi make up incredibly important part of plant ecosystem

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You've almost certainly seen fungus throughout the environment. Growing on top of, inside of and underneath all sorts of surfaces. But fungus, which may be a nuisance to you, make up an incredibly important part of the ecosystem.
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2012 in review: These PRI.org stories captured your interest most

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As we ring in 2013, it's worth taking a moment to look back on 2012. These stories were the most popular on PRI.org this year — and they run the gamut. From animals to weird science, the PRI.org audience proved, again, they you all go for variety.
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Scientists taking closer look at how critical hearing is

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Hearing may not be as selective as we once thought. With humans and other mammals that create auditory communication, hearing is not just about what the ear actually hears.
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Animals adopt varying techniques to get through long days of winter

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Coping in the cold months of winter can often be a drag for humans. But for animals who hibernate or migrate they have developed strategies to get through the cold dark season.
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NOAA maps the noise pollution we don't hear, under the sea

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Imagine having to shout over incredibly loud noise in order to communicate with someone close by. For whales and other ocean animals that rely on echolocation sonar to communicate and locate food, noise pollution created solely by humans has taken a toll.
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Physicists produce physics horror flick 'Decay' in an effort to increase understanding

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It's easy to get overwhelmed when someone talks about the Higgs boson, the large hadron collider or almost anything else at the center of modern physics. But on a very basic level, people are often extremely interested. So student scientists at the CERN laboratory turned physics into an easy-enough-to-understand horror film.
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Citizen science project needs your help to catalog Africa's great animals

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Tracking Africa's wild animals requires a lot of science, a little technology and a whole lot of hard work. One project need your help in getting that work done. It's called Snapshot Serengeti, and it hopes to use the general public to catalog the millions of images that researchers take in one park in Tanzania.
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DJ Focus becomes youngest visiting practitioner at MIT

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Sierra Leone could become the next hub of innovation. In an effort to encourage more innovation among young people there, a Massachusetts Insitute of Technology doctoral student set up a contest in his home country. And one of the contest's finalists is already making a positive impression at MIT.
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Adored wolf killed outside Yellowstone limits

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Sanctioned wolf hunts in the northern Rockies have resulted in the death of eight wolves collared by researchers from Yellowstone National Park. But with the recent death of the much-loved female leader of the Lamar Canyon pack, commissioners are taking action.
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