7 Weird Things That Happen Before You’re 7

Science
Kids are weird. They eat mud, talk to bugs, and stick things up their noses… but the changes kids go through as they grown out of infancy and into childhood are even weirder!

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Sources:
Eye color:
https://www.ncbi.nlm.nih.gov/pubmed/9152135
http://goaskalice.columbia.edu/answered-questions/genetics-eye-color-inheritance
https://udel.edu/~mcdonald/mytheyecolor.html
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3834696/
https://www.ncbi.nlm.nih.gov/pubmed/20944644
https://ghr.nlm.nih.gov/condition/waardenburg-syndrome#genes

Brain cells:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2989000/
http://s3.amazonaws.com/academia.edu.documents/45662663/Synaptic_pruning_by_microglia_is_necessa20160516-13211-167tuh5.pdf?AWSAccessKeyId=AKIAJ56TQJRTWSMTNPEA&Expires=1466733217&Signature=KDM2OT8D4b7aBweX8YAfqeaR6I4%3D&response-content-disposition=inline%3B%20filename%3DSynaptic_Pruning_by_Microglia_Is_Necessa.pdf

Head shrinks:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3400202/
https://carta.anthropogeny.org/moca/topics/age-fontanelles-cranial-sutures-closure
https://faculty.washington.edu/chudler/dev.html
http://www.brainfacts.org/about-neuroscience/ask-an-expert/articles/2012/are-you-born-with-all-your-brain-cells-or-do-you-grow-new-ones

Body growth:
http://www.pnas.org/content/111/36/13010.full.pdf

Shivering:
http://goaskalice.columbia.edu/answered-questions/goosebumps-and-shivers
http://www.health.harvard.edu/staying-healthy/out-in-the-cold
http://www.pediatrics.emory.edu/divisions/neonatology/apnec/Thermoregulation.ppt
http://www.ncbi.nlm.nih.gov/pubmed/6722594

Larynx:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4439709/
http://thebrain.mcgill.ca/flash/capsules/outil_bleu21.html
http://asifg.mycpanel.princeton.edu/publications/pdfs/Ghazanfar&Rendall_Evolutionofvocalproduction.pdf
http://www.livescience.com/7468-hyoid-bone-changed-history.html

Language:
http://science.sciencemag.org/content/310/5749/815.full
https://www.ncbi.nlm.nih.gov/pubmed/22013214
http://pandora.cii.wwu.edu/vajda/ling201/test4materials/childlangacquisition.htm

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