Face-to-face, a human and a chimpanzee are easy to tell apart. The two species share a common primate ancestor, but over millions of years, their characteristics have morphed into easily distinguishable features. Chimps developed prominent brow ridges, flat noses, low-crowned heads and protruding muzzles. Human noses jut from relatively flat faces under high-domed crowns.
Palm oil producers thought they had licked shortages of edible oil and biofuel in the 1980s, when they learned to make genetically identical copies of high oil-yielding palms. But when the cloned palms matured, some plants made shriveled fruits with very little oil. Exactly how these dry, “mantled” fruits spawned from twins of oil-gushing palms has been a mystery ever since.