A brief history of space flight – in numbers
Thirty-one astronauts have been to Mars and back, or put in enough hours in space, anyway – just one of the insights from the stats of space flight
First stem cell trial for stroke shows lasting benefits
A year after receiving an injection of stem cells, 11 people disabled by stroke continue to improve on five different measures of recovery
Feedback: Papering over a problem
Too much information, sheets to the wind, the fall of the house of doll and more
Jumping Frog Jubilee: Secrets of amphibian Olympians
When it comes to probing the prowess of animal athletes, biologists could take a lesson from the frog jockeys of the Calaveras County Fair
Self-healing plastic oozes fluids to mimic blood clots
An artificial vascular system embedded in plastic can fill holes up to 8 millimetres wide and may one day help spacecraft and fighter jets mend themselves
Childhood memories erased by growth of new brain cells
The brain cells laid down during our earliest years may interrupt memory formation, making us bad at remembering our infancy
How your ancestors' farms shaped your thinking
East Asians tend to think more in collective terms than Europeans and North Americans, and the explanation may lie in their staple crops
Take the helm of a real Apollo moon lander
Make your house a bit more like the Falcon lunar module by dropping $10,000-plus on the joystick Dave Scott used to steer his way to the surface of the moon
Zoologger: Polar bears evolved to eat junk food
The world's largest land predators have evolved genes that let them eat a diet ultra-high in fat that would give most humans a heart attack
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