Long suspected to be biological in origin, desert varnish is confirmed to be the product of light-gathering microbes that concentrate manganese as sunscreen.
Become a movie producer and help bring the evidence of intelligent design to millions of people in the next year.
“Natural selection” is like a Swiss Army knife that researchers in widely different disciplines use to solve their problems.
Richard Lenski claims that his experiment provides “one of the most direct demonstrations of Darwinian adaptations by natural selection you can imagine.”
Perhaps the biggest evolutionary development in the course of the experiment involved some bacteria beginning to feed on citric acid.