- May 30, 2012
- Traces of “black rain” discovered at six locations, nine to 22 kilometers from the A-bomb hypocenter
- May 28, 2012
- President of the American Society of Hiroshima-Nagasaki A-Bomb Survivors meets with Hiroshima mayor
- May 17, 2012
- NPT preparatory committee closes, urges North Korea to refrain from further nuclear testing
- May 17, 2012
- Interview with Annika Thunborg, spokesperson for the Preparatory Commission for the CTBT Organization
- May 14, 2012
- North Korea is pressed to renounce its nuclear arms at NPT preparatory committee
- May 14, 2012
- NPT Preparatory Committee discusses denuclearization of Middle East and North Korean nuclear arms program
- May 10, 2012
- Mayors for Peace discusses establishing regional chapters and sharing operating expenses
- May 10, 2012
- Hiroshima mayor ends visit to Austria, earns support for nuclear abolition
- May 10, 2012
- Hiroshima mayor submits signatures supporting start of negotiations on Nuclear Weapons Convention to NPT preparatory committee
- May 10, 2012
- Hiroshima mayor appeals for NPT review conference to be held in A-bombed city
- May 10, 2012
- Discussion on nuclear disarmament begins at NPT Preparatory Committee
- May 10, 2012
- Nagasaki mayor speaks at NPT Preparatory Committee meeting, calls for plan to abolish nuclear weapons
- May 10, 2012
- Shizuteru Usui, doctor who devoted himself to the medical care of A-bomb survivors, dies at 74
