Nitrogen finally joins the elite tier of elements like carbon that can form neutral allotropes—different structural forms of ...

Crystal Creamery Inc., of Modesto, CA, is recalling 92,594 pounds (1,680 bags) of Non Fat Dry Milk because of potential contamination with Salmonella. The recall was initiated on May 19 and is ...

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Often in R there is a shorter, more compact way of doing things. That's the case here; we can use the magical tapply function in the above example. In fact, we can do it in just one line. That call ...

Excess health risk estimates of exposure per unit mass concentration of fine particulate matter (PM 2·5) still exhibit a wide range, potentially due to variations in aerosol size and ...