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Petrichor: What makes rain smell so good?

On this rainy Friday, I want to highlight a recent study which was published in Nature Communications. From Wikipedia: Petrichor (/ˈpɛtrɨkɔər/) is the earthy scent produced when rain falls on dry soil. The word is constructed from Greek, petra, meaning ‘stone’ + ichor, the fluid that flows in the veins…
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Which city has the most unpredictable weather?

FiveThirtyEightScience published an interesting article this week on using statistics to determine which parts of the US had the most and least predictable weather.  They used a combination of ten different variables including max and min temperature, precipitation, winds and severe weather to determine how changeable each value was.  The…
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