A fossil of a cockroach dating to the Cretaceous period, about 145 to 65 million years ago. Insects took to the skies much earlier, but there is scant fossil evidence from the period showing how they evolved wings.
Waters surrounding a remote coral reef atoll teeming with marine life.
The population of western monarch butterflies in California dropped to a record low last year, according to a nonprofit conservation group.
Fur seals can switch off and on R.E.M. sleep when they're in the sea and on land, a pattern never seen before. Scientists believe it might mean R.E.M. sleep helps generate heat in our skulls, like shivering for the brain.
Dragonfly, a proposed dual-quadcopter lander that would explore Saturn’s moon, Titan, was one of two finalists in NASA’s New Frontiers competition.
The Caño Cristales in Colombia, home to Macarenia clavigera, which turns the river bright colors in the rainy season. It has become a tourist attraction, but oil reserves nearby have pitted the government against a petroleum company.
Neil Gershenfeld of the Massachusetts Institute of Technology says that synthetic biology, which involves the creation of biological systems intended for specific purposes, can generate scientific advances as well as ethical questions.
The Sistine Chapel at the Vatican.
Employees of the Baksan Neutrino Observatory in southern Russian gather at its entrance to take an electric trolley thousands of feet underground to the facility's laboratories.
The film “2001: A Space Odyssey,” which is being rereleased this year for its 50th anniversary, baffled film critics when it first came out but now tops their lists of the most important movies of all time.
Transportation Security Administration employees at work. The agency employs thousands of officers who try to spot suspicious passengers.
The skeleton of a child found in Hungary was partially mummified by copper from a coin placed in its hand.
There were nine species of the flightless birds called the moa.
Researchers used a laser pulse to study superionic water, which is simultaneously solid and liquid.
A honeybee with pollen on its legs.
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