How to break a sweat

By: Adam Ziegler, Matthew Papp, Shivam Gandhi, Nikolas Steege, Bio323 Evolution, Fall 2019, Stonehill College

Let’s face it, we all sweat. Despite sweat being such a common and prominent aspect of everyday life, not many people understand what causes sweating, or why not all mammals sweat. A recent paper explored the difference in human sweat compared to other primates from compiled data sets across three phylogenetic models. The research focused on the two glands that are primarily involved in sweating, the apocrine and eccrine glands. By combining glycogen concentration, climate, and distribution of glands, the authors were able to predict the eccrine gland ancestral relationship. The results show exactly how humans have come to evolve the current gland distribution and offer a previously unstudied insight into our ancestors. 

Demonstration of Sweat. Image credit:  https://en.wikipedia.org/wiki/Perspiration#/media/File:Demonstration_of_Sweat.jpg by Dogbertio 14 is licensed under CC BY 3.0
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Bitterness on the Brain

Bitterness on the Brain

by: Alex Baryiames, Cassie Daisy, Mohini Patel & Olivia Peterson (Stonehill College Evolution Fall 2017)

Eating something bitter isn’t a great experience. The moment the taste hits your mouth can be an unpleasant one, and often causes you to avoid that particular food in the future. In an effort to understand this phenomenon, researchers discovered that the ability to detect these bitter tastes might have some evolutionary benefits! Read on to discover how the ability of vertebrates to detect bitter tastes can be a protective mechanism against toxic materials, and greatly contributes to our survival!  

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