Scientists have learned more about why royal jelly makes queen bees, and we peek at the tiny and terrifying mandibles of trap-jaw ants.
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Sources:

http://dx.doi.org/10.1371/journal.pgen.1006946
https://www.eurekalert.org/emb_releases/2017-08/p-hbw082417.php
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4977847/

http://dx.doi.org/10.1242/jeb.156513
https://www.eurekalert.org/emb_releases/2017-08/s-srh082317.php
https://youtu.be/Lq5-KE2C5mw

Images:

https://commons.wikimedia.org/wiki/File:Weiselzellen_68a.jpg
https://www.eurekalert.org/multimedia/emb/148793.php?from=368620
https://www.eurekalert.org/multimedia/emb/148675.php?from=368501
https://www.eurekalert.org/multimedia/emb/148674.php?from=368501
https://www.eurekalert.org/multimedia/emb/148676.php?from=368501