The First, and Greatest, Reality Show: Evolutionary Biology

From discovermagazine.com:

The tongue orchid's extreme style of deception is new to science, but it is just the latest twist in an evolutionary process Charles Darwin described 150 years ago. Natural selection, he realized, allows species to adapt to their environment. But environment is more than just physical conditions; a species also adapts to its bio­logical environment. It may eat other species and be eaten in turn. It may cooperate with some species and be infected by others. In On the Origin of Species, Darwin used the metaphor of the "tangled bank" to illustrate the ways in which organ­isms depend on each other. It turns out that some species are even more entangled than he realized, so mutually dependent that they drive each other's evolution. Biol­ogists call this reciprocal change ...

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