Fritz Haber and Carl Bosch: The Scientists Who Transformed Global Food Production | MIT Press Book on Agricultural Innovation | Perfect for History of Science Readers

The Haber process is arguably the most significant development of the 20th century, yet it remains virtually unknown to the general public. There are a few chapters on the history and chemistry of this vital process, and they are reasonably well written. But the vast majority of the book is an endless litany of statistics, completely devoid of narrative structure. For example:"In the United Kingdom more than half of all nitrogen fertilizer has been applied to grasslands. A Royal Society study found that in the late 1970s average applications on pastures surpassed the inputs to arable land (172 vs. 135 kg N/ha), and that synthetic compounds accounted for 57-63% of all inputs. The overall use of fertilizer nitrogen in the United Kingdom rose by almost 50% between the late 1970s and the mid 1980s, but it declined afterwards, and its average during the late 1990s has been only about 20% higher than a generation earlier, which means that the synthetic fertilizers supply between 65 and 70% of all nitrogen inputs. But high-yielding winter wheat -- the 1998 mean was 7.97 t/ha -- still receives more than 180 kg N/ha, double the amount applied in 1970 when the yield was around 4 t/ha, and the secular correlation between the rising applications of inorganic nitrogen and rising harvests is obvious (fig. 7.8)."Now imagine 300 more pages of text just like that, and you get the idea. There is no *story* here, just data. It's a shame, because there is definitely a story to be told.The material on the Haber process itself is better, but not great. In particular, the author can't seem to choose the level of the audience: descriptions of chemistry alternate between being too simplistic and assuming too much. Details essential to understanding often seemed to be missing, while details of no apparent relevance are in abundance. I don't really care whether the process takes place under 137 vs. 152 atmospheres; but I do care *why* the pressure is so critical, which is never explained.I really wanted to like this book more than I did. There *is* plenty of good material here, but you have to sort through a lot of empty statistics to get it, and the omission of key pieces of scientific explanation makes for a painfully frustrating read.No other technology of the 20th Century had more effect on raising the standard of living of the people of the world than the synthesis of ammonia which allowed the population to be several times higher than it otherwise would have been and also greatly reduced hunger and malnutrition in most parts of the world.The book begins with the early science of chemistry and the development of a basic understanding of crop nutrition and the role of nitrogen in the early 1800's. After nitrogen's vital role was established a fertilizer industry based on guano and later Chilean nitrates, but supplies were being depleted. Synthetic nitrogen fertilizers were developed in the late 1800's, but the processes were very costly.Fritz Haber built on the works of other chemists and eventually determined conditions (temperature, pressure, catalyst) whereby ammonia could be synthesized from hydrogen and nitrogen with a satisfactory yield. The process required high pressures and elevated temperatures which had never been used on an industrial scale before. It was Carl Bosch, a chemical engineer, who believed the process could be commercialized, and proceeded to develop the field of high pressure chemistry.This is an excellent semi-technical book because: 1) subject matter importance, 2) overall it was interesting because it is part historical, part biographical, part popular science, 3) it is exceptionally well researched and documented. However, while it was very easy for a chemical engineer like myself to read, I am not sure it would be appreciated by someone without a similar background, although the sections pertaining to the use of nitrogen fertilizers may be of interest to those involved with agriculture. Also, it is highly recommended to economists involved with the impacts of technology on the economy.The discovery & development of the Haber process is truly one of the great 20th century stories &, certainly one of the most important inventions in the century. Without it the world's population could never have grow to the numbers of today. However the author writes as if he were composing a chemistry text book. I actually am a graduate chemist ('tho not a practicing one) and still had to look up a number of references and abbreviations. A glossary would certainly have helped..When studying chemistry years ago I was impressed by the technology of the Haber-Bosch process but did not fully understand the social and economic repercussions of it, whether for good or bad. This book fills the gaps. It is detailed, informative and thought-provoking. Highly recommended.; )Sehr gut aus einer anderen Prespektive beleuchtet der Autor diese chemisch wichtige Thema.Everything was as it should be