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Evolution
The visual systems of a group of mollusks reveal how future evolution depends on the past.
In the new book Purpose, a Yale psychiatrist argues Darwinian forces are divinely guided.
Over 72 million Americans are obese—a condition associated with a plethora of negative health outcomes including diabetes, cancer, and heart problems. But Americans’ eating habits aren’t obesity’s only cause, and we’ve suspected as much for a long time now. In 1932, the California Medical Association noted that “the inborn disposition to obesity may be very […]
A collection of metal atoms called the “metallome” helped drive evolution.
Can an organism ever become perfectly evolved? In Richard Lenski’s lab at Michigan State University, scientists are trying to see if that’s possible. The idea grew out of the lab’s Long-Term Evolution Experiment, started in 1988, with Escherichia coli; in 2010, they celebrated 50,000 generations (500 occur every 75 days). The lab has 12 populations […]
The staunch atheist and essayist Christopher Hitchens once said that “the most overrated of the virtues is faith.” It’s a reasonable conclusion if you believe, as the astrophysicist Carl Sagan did, that “extraordinary claims require extraordinary evidence.”1 To believe something without evidence—or have faith—is, in their view, something to avoid (and, when called for, to […]
Queen ants fight dirty. With their powerful jaws, they clamp down on each other, ripping through exoskeleton and vital flesh—a fight to the death. The spoils of victory include the deceased’s entire colony. The queen with the broader head and stronger jaws is most likely to win. When we think of animal weapons—antlers, tusks, horns, […]
When Arne Hendriks, a 6” 4’ Dutchman, faced audience members at TEDxBrainport in 2012, he smiled apologetically. “I have some bad news for you,” he said. “You’re not short enough.” Hendriks believes that the planet’s growing population—currently at 7 billion—is unsustainable. His solution? We should shrink ourselves to 50 cm, around the height of a […]
How “probiotic epidemics” help wildlife—and us—survive.
