Science
Facts, names, and the way a system behaves.
The Kalman Filter: Guessing Well From Noisy Sensors
The Kalman filter blends a model's prediction with noisy measurements to estimate what a system is really doing, and it has quietly steered everything from Apollo to today's drones.
CORNET: Testing Robots and Networks Together
CORNET runs network and robot simulators from one config, making cyber-physical systems research easier to run, reproduce and compare.
Incredible white
A short list of names and phrases that begin with white, from a butterfly to a kind of noise.
Brain facts
Weight, speed, oxygen, and a few other numbers for an ordinary human brain.
Brain drain and brain gain
Skilled people leave one country and arrive in another. One side calls it a drain. The other calls it a gain.
Technology — the best of 2009
Four machines that stood out in 2009: two netbooks, a pocket camcorder, Windows 7, and a MacBook Pro.