In May 2011, Cancer Council Australia released a review of the evidence surrounding the introduction of plain packaging. The review suggested that packaging plays an important part in encouraging young people to try cigarettes.
Our correspondent says there will be serious question about how a major tunnel on one of Japan's most important traffic arteries could have failed so catastrophically, with the private company that runs the highway saying the tunnel had undergone a major inspection just two months ago and had been given a clean bill of health.
We still do not know which are the most important factors, but perhaps the most likely is a combination, a double whammy of changes, such as a high-fat diet combined with increased environmental chemical exposures.
