Charles Darwin proposed "natural selection" as the means by which new creatures evolve. The question then became, what does nature select? The reigning consensus is that nature selects individuals with genetic mutations, and that this eventually leads to the development of new life forms.

The Guinness Book of World Records is renowned for its collection of odd feats and extraordinary measurements. One of its entries may someday be a young miniature stallion named Einstein, which promises to rewrite the record as the smallest horse ever.

Scientists discovered something remarkable in a recent study—evolution can’t be reversed. In tracing the supposed evolution of a common protein, they introduced mutations to move the protein “backward” to each of its hypothetical transitional stages and discovered that each one wouldn’t work. What does that mean to the theory of evolution?

Observable change is happening in humans, albeit slowly and only for certain traits. Scientists have tracked the histories of 14,000 residents of Framingham, Massachusetts, since 1948. Data from 2,238 females participating in the Framingham Heart Study were recently analyzed, including weight, blood pressure, cholesterol levels, and number of offspring.