Learn about how quickly certain people adjust to time changes; how you can help slow jungle loss; and why ice cubes grow spikes.

Early birds adjust to time changes faster than night owls by Grant Currin
“Springing forward” affects early birds less than night owls, study finds. (2021, July 20). EurekAlert! https://www.eurekalert.org/news-releases/472466 
‌Nield, D. (2021). Your Genes Could Affect How Well Your Body Adjusts to Daylight Saving Changes. ScienceAlert. https://www.sciencealert.com/how-well-we-adjust-to-daylight-saving-time-can-depend-on-our-genetics 
‌Tyler, J., Fang, Y., Goldstein, C., Forger, D., Sen, S., & Burmeister, M. (2021). Genomic heterogeneity affects the response to Daylight Saving Time. Scientific Reports, 11(1). https://doi.org/10.1038/s41598-021-94459-z 

More from archaeologist Patrick Roberts:

Pick up "Jungle: How Tropical Forests Shaped the World — and Us": https://www.basicbooks.com/titles/patrick-roberts/jungle/9781541600096/ 
Website: https://www.patrickjroberts.com/  
Follow @palaeotropics on Twitter: https://twitter.com/palaeotropics 
Cheyenne Mountain Zoo Sustainable Palm Oil Shopping Guide app: https://www.cmzoo.org/conservation/orangutans-palm-oil/sustainable-palm-oil-shopping-app/ 
WWF Palm Oil Buyers Scorecard: http://palmoilscorecard.panda.org/ 

Spiky ice cubes by Ashley Hamer (Listener question from Monica in Los Angeles)
Occasionally the ice cubes in my freezer’s ice trays will develop a stalagmitelike shape without any obvious, unusual interference. Can you please explain what causes this? (2007, April 30). Scientific American. https://www.scientificamerican.com/article/experts-ice-spikes/ 
‌Spikes on Ice Cubes. (2011). Utoronto.ca. https://www.physics.utoronto.ca/~smorris/edl/icespikes/icespikes.html 
‌Monica’s ice spike picture: https://drive.google.com/file/d/1oHVKZkDqGF5ktgNxnIU7QceAKa9u6-e0/view?usp=sharing

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