Japan's public trash bin shortage and robots

What happened before and after this story. Background events not previously covered were summarised by AI.

1. 20 Mar 1995Background

   Tokyo subway sarin attack prompts removal of public trash bins

   After Aum Shinrikyo's sarin attack on Tokyo's subway on 20 March 1995, many public bins were taken away over security fears.

2. 

   9 Nov

   Japan has few public trash bins, so smart bins and robots may step in

   Public trash bins are hard to find in Japan. Now smart bins and autonomous robots are being tried as a way to make throwing things away easier.