Wanna see a quantum dot?: A charge emission from an 18nm carbon nanotube? Bromine atoms human-assembled in a ring structure? Wired presents a gallery of nano viewpoints for your pleasure and fascination.
There's a new qlaw in town: Is quantum computing limited by its inability to solve certain problems efficiently? Problems like Goldbach's Conjecture that every even number 4 or greater can be written a sum of two prime numbers; finding all possible parameter settings of a neural network that is best at predicting historical stock market data; games of strategy; breaking cryptographic hash functions -- all of these tasks apply to a class of algorithms known as "black-box algorithms." This thought experiment by Scott Aaronson makes you think.
Inexpensive way to make space junk: EE Ken Schellenberg already holds the altitude record for putting a soda-bottle rocket -- plastic bottle, bicycle pump, water, and a bit of soap -- into the air: Well over 200 meters. (He's also built a Kevlar-reinforced, experimental, single-stage missile pressurized with compressed nitrogen that flew to 379 meters.) His next goal is to put one in orbit (5km) by using liquid CO2.