Tokyo - 70 years on from one of history's deadliest air raids

Seventy years ago this week, Tokyo and other Japanese cities were laid waste in a series of devastating air raids. On the night of March 9 and 10, 1945, more than 300 bombers dropped incendiaries on the Japanese capital for over two hours.

This resulted in what was said to be the worst man-made fire in history. Many of Tokyo's citizens lived in tightly packed, flimsy wooden buildings, and for the loss of just 15 aircraft, the Americans were able to destroy more than a quarter of a million structures. 

Fires raged for four days, and the death toll may have been as high as 140,000 - a similar number to the Atomic bomb attack on Hiroshima, and nearly twice as many as the one on Nagasaki. Over the next few days, Nagoya, Osaka and Kobe all suffered similar fates to Tokyo.

While last month's 70th anniversary of the bombing of Dresden was marked across Europe, in Tokyo, there is little today to commemorate the devastating raid of 1945, apart from a memorial (pictured) and a charnel house in a park. For more, see A Disastrous History of the World. 

The growing cost of disasters

The Economist ran a fascinating piece in its January 14 edition on the growing cost of disasters.   Five of the ten most expensive disasters in history have happened in the last four years, and a leading reinsurer, Munich Re, reckoned 2011 was the most costly year in its history.

The most expensive disaster ever is last year’s Japanese tsunami, followed by Japan’s Kobe earthquake of 1995, and Hurricane Katrina in 2005.   Most expensive does not mean highest number of casualties.      The Japanese tsunami cost fewer than 16,000 lives, Kobe 6,400 and Katrina 1,300, compared with a quarter of a million killed in the Boxing Day tsunami of 2004, and perhaps a similar number in the Haiti earthquake of 2010.

One reason for the growing cost of disasters is that there are more and more human beings around to suffer losses.   The population of hurricane-belt state Florida, for example, has risen from 2.8m in 1950 to 19m now.

And overall human beings are getting richer so there are more things to be destroyed, while sometimes not enough thought is given to where development takes place.   Thailand’s growing industries, for instance, have been located in areas known to be vulnerable to flooding.