This site is brilliant. There is a lot of up-to-date information, for free and with brilliant illustrations. The subject topics go from the bullet train (Japan) to nuclear weapons; both demonstrating the authors talent at researching technology and explaining it with pictures and interesting words. He must take a lot of time to write and draw all these revalations, and as an added bonus, the site is free.
The bad part is that their are too many annoying pop-up adverts, but I think it is understandable, as the author must pay for hosting etc. This site is definetly a goldmine of information.