Close Reading
"Among the few possessions Fritz Haber had with him when he died was a letter written to his wife. In it, he confessed that he felt an unbearable guilt; not for the part he had played, directly or indirectly, in the death of untold human beings, but because his method of extracting nitrogen from the air had so altered the natural equilibrium of the planet that he feared the world’s future belonged not to mankind but to plants, as all that was needed was a drop in population to pre-modern levels for just a few decades to allow them to grow without limit, taking advantage of the excess nutrients humanity had bestowed upon them to spread out across the earth and cover it completely, suffocating all forms of life beneath a terrible verdure."
This final paragraph in Prussian Blue is very striking. This story, despite incredibly graphic depictions of what it is like to die at the hands of chemical warfare, does not take up the stance that science or technology will bring about the end of humanity. Earlier in the piece, care is taken to explain exactly what Haber’s process for developing atmospheric nitrogen into nitrates usable in agriculture meant for the population of the world, a process without which the sustainability of Earth’s current population would be impossible. The good and the bad of scientific research are thus explored. That “humanity had bestowed upon” plants this ability to “grow without limit” ultimately implicates humanity as the cause of their own destruction, not nature itself. This is also fascinating in comparison with ideas considered earlier in the course, where it was thought that science could be used to allow humanity to understand/dominate nature. Haber, however, implies that the exact opposite might ultimately occur: nature will take advantage of the fruits of human scientific labor to reclaim the world from humanity, using our own technology against us. Prussian Blue depicts the powerful tool that scientific research can be, used either for good or evil, and used by both humanity and nature. By showing that nature, too, can achieve scientific advancement (albeit not independently), the truly neutral nature of technology is clear; tools do not control the destiny of the world, but those that use them can.