The smell of freshly cut grass on a warm summer day might make you think of lazy days in a hammock, sipping lemonade. But to the mangled grass producing that scent, it is the pungent perfume of pure terror...

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Sources:
http://mentalfloss.com/article/30573/what-causes-fresh-cut-grass-smell
http://science.sciencemag.org/content/329/5995/1075.abstract
http://today.agrilife.org/2014/09/22/mown-grass-smell-sends-sos-for-help-in-resisting-insect-attacks-researchers-say/
https://www.sciencedaily.com/releases/2014/09/140922145805.htm
http://research.tamu.edu/2014/09/23/that-fresh-mown-lawn-smell-is-actually-a-distress-call-to-insects/
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.544.4066&rep=rep1&type=pdf
http://www.ncbi.nlm.nih.gov/pubmed/19206090
https://books.google.com/books?id=4tETDAAAQBAJ&pg=PA455&lpg=PA455
http://www.nap.edu/read/9650/chapter/7#111
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3794753/
http://learn.genetics.utah.edu/content/selection/corn/