Today, you’ll learn about a new discovery that turns our understanding of hunter-gatherer diets on its head, the effect of self-checkout on our sense of loyalty to grocery stores, and some good news about the majestic emperor penguin.  

Hunter-Gatherer Diets 

• “Hunter-gatherers were mostly gatherers, says archaeologist.” by Hannah Devlin. 2024.  
• “Paleo diet: What is it and why is it so popular?” by Mayo Clinic Staff. 2022.  
• “What Paleo diets get wrong: We’re not evolved for meat, and our ancestors ate carbs.” by Julia Belluz. 2015.  

Self-Checkouts 

• “Does Self-Checkout Impact Grocery Store Loyalty?” Drexel News. 2024.  
• “Must-Know Self Checkout Statistics [Latest Report].” by Lorena Castillo. 2023.  
• “Self-checkout now comprises nearly 40% of grocery checkout options, study says.” by Catherine Douglas Moran. 2022.  
• “Feeling rewarded and entitled to be served: Understanding the influence of self- versus regular checkout on customer loyalty.” by Farhana Nusrat & Yanliu Huang. 2024.  

Penguin Colonies 

• “Scientists Discover Four New Emperor Penguin Colonies From Satellite Images of Antarctica.” by Sarah Kuta. 2024.  
• “Top 10 Facts About Emperor Penguins.” WWF. 2023. 

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