The WSJ's Numbers Guy on Chernobyl deaths (Measuring Chernobyl's Fallout):
How many people died because of the Chernobyl nuclear-reactor explosion, which spewed radiation across northern Europe? Twenty years after the accident, the death toll remains in dispute.
This month, the World Health Organization estimated "up to" 9,000 people died or will die of cancer because of the incident, which unfolded in the early morning hours of April 26, 1986. The number was 6,700 to 38,000 in a recent report published in a peer-reviewed journal, from the Lyon, France-based International Agency for Research on Cancer, an agency governed by the WHO and 16 member nations. Greenpeace International, which opposes nuclear power, published its own report, based partly on papers from former Soviet nations. Greenpeace estimates the death toll is between 93,000 and 200,000, including cancer deaths and other illnesses like immunity disorders.
As is his wont (Webster's Dictionary says this means "habitual way of doing"), the Numbers Guy dissects these differences.