Catastrophes, wars, terrorism, ecological disasters, deadly diseases,
The list of tragedies - both personal and public - is endless. Every
day and hour media, politicians, experts - and charlatans - bring us
a never ending barrage of bad things. No wonder that many people feel
depressed and weary.
This blog tries - in a modest and personal way - to contribute to a more
balanced view. After all, there is so much to appreciate and
enjoy in life ...
Tuesday, 12 March 2013
Measuring air pollution in Berlin (in 1905)
Dust measuring in Berlin in 1905
Berlin was a "progressive" city already in the early 20th century. Devices like the one above were used to measure the dust level in the center of the city.