Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: iStock A surprising discovery about bald eagles in Arizona is forcing scientists and the communities that share ...

American naturalist Henry David Thoreau wrote that “all the laws of nature will bend and adapt themselves to the least motion of man.” More than 150 years later, Thoreau's assessment has proven true.

Cells of a multicellular organism are genetically homogeneous but structurally and functionally heterogeneous owing to the differential expression of genes. Many of these differences in gene ...

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