* "Canine Cognition: Can Dogs Understand Human Language?" by Coren, S. (2020).

* "The Intelligence of Dogs" by Coren, S. (2006).

* "Do Dogs Understand What We Say? A Review of the Evidence" by Hare, B., & Woods, D. (2013).

The evolution of brown fat

* "The Evolution of Brown Adipose Tissue: A Historical Perspective" by Cannon, B., & Nedergaard, J. (2008).

* "The Evolutionary Origins of Brown Adipose Tissue" by Frühbeck, G., & Rodríguez, A. (2009).

* "The Origin and Evolution of Brown Adipose Tissue: A Tale of Two Cells" by Tseng, Y., & Wu, J. (2019).

How SSRIs relieve depression

* "Selective Serotonin Reuptake Inhibitors (SSRIs): A Review of Their Pharmacology and Clinical Use" by Stahl, S. (2013).

* "The Serotonin System and Depression" by Hamon, M., & Blier, P. (2013).

* "SSRIs and the Treatment of Depression: A Critical Review" by Nolen, W. (2011).

Boeing's Starliner

* "Boeing's Starliner Fails to Reach Orbit in Major Blow to NASA" by Foust, J. (2022).

* "Starliner OFT-2: What Went Wrong and What's Next for Boeing's Crew Capsule?" by Grush, L. (2022).

* "Boeing's Starliner: A History of Problems" by Sheetz, M. (2023).