A penny in every fuse box

This paper provides evidence that stock traders focus on round numbers as cognitive reference points for value. Using a random sample of more than 100 million stock transactions, we find excess buying (selling) by liquidity demanders at all price points ...

Presents a photograph of the WindBox turbine which is installed on the roof of a building in Rouen, France. It is 1.6 meters tall, and has a 4-square-meter footprint (leaving plenty of space for solar panels or tiles). The unit, which weighs 130 kilograms,...

Shortage of electricity is a major problem in many developing countries. Unfortunately, for some of these countries the only solution to this problem is to shut down complete electricity supply to a few neighborhoods to make up for the gap between ...