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The platypus, as it turns out, derives its DNA from a menagerie of creatures. When its genome was fully decoded, it was found only to be 80% mammalian, and had genes found previously only in...

Now the leatherback turtle overcame the heat issue via a simple, but evolutionarily impossible solution; it is the only reptile that possesses fatty insulation known as brown adipose tissue, and the only reptile that regulates...