Earthquake prevention

DNA India : Japan to launch quake warning system

Space science

Space.com : Japan Announces Manned Moon Flight by 2025

CBS News : Japan Eyes Manned Moon Base

Asia Times : China fears India-Japan space alliance

Reuters : NASA eyes buying Japan's cargo spacecraft: report

Railway technology

Wikipedia : JR-Maglev

Electronics

Japan Times : Japan leading quest for first quantum computer

Wikipedia : Japanese robotics

Patents & inventions

Japan Times : Japan's inventor supreme shares the secret of 3,218 successes

Japan Times : Cashing in on ideas - Turning a profit from a brainwave can be patently difficult to do

Gadgets, gizmo's and funny inventions

Wikipedia : Toilets in Japan