Trilobites: Finding the Speed of Evolution in a Study of Bird Beaks

When the ancestors of Darwin’s finches arrived on the Galápagos two million years ago, they gained access to a world of new morsels, untapped by other animals. In a relatively short period, 14 species of finches evolved, specializing in different diets through different beak shapes: short for crushing seeds, sharp for catching insects, long for probing cactus flowers and so on.

Science Will Suffer Under Trump’s Travel Ban, Researchers Say

Researchers, academic officials and science policy makers are expressing alarm at President Trump’s order barring entry to the United States to people from certain predominantly Muslim countries, saying it could hinder research, affect recruitment of top scientists and dampen the free exchange of scientific ideas.

Gazing Into Danakil Depression’s Mirror, and Seeing Mars Stare Back

DANAKIL DEPRESSION, Ethiopia — In oppressively dry heat and a miasma of sulfur and chlorine, the rocky landscape sprouts patches of neon green and yellow that resemble oozing scrambled eggs. Near-boiling pools of acidic water bubble between odd formations of rocks and minerals: white beehive-shaped mounds of salt, yolk-colored lattices of sulfuric crust, purplish-red crumbles.