Why are some people left-handed? What's behind the surge in celiac disease? Find out in ScienceSeeker's picks of the best posts for the week of August 13-19 2018 #sciseekpicks #scicomm

This week, the best science posts include lessons on biology from large mammals, a plan to explore space that could devastate any alien civilisation it finds and what happens when we sleep. But there are many other topics touched on in ScienceSeeker editors' favourite posts within their respective areas of interest and expertise for the past seven days. Here is the full round-up of the ScienceSeeker Editors’ Selections:

• Are you in your right mind? The evolution of left handedness by Roising Coneely at Seeking Science
• Celiac disease: What’s behind the surge in diagnoses? by Andrew Porterfield at The Genetic Literacy Project 
• 2-Minute Neuroscience: Stages of sleep at Neuroscientifically Challenged
• Hospital superbugs are evolving to survive hand sanitizers by Beth Mole at Ars Technica
• Big Tech waves in Healthcare and The Death of EMR: Blockchain Technology and Its Likely Impact on Healthcare by Dr Fey at Digital Sky MD
• Cancer Is One Worry Elephants Can Feel Free to Forget by Katherine J. Wu at Smithsonian.com
• What a Grieving Orca Tells Us by Ed Yong at The Atlantic
• Hacking The Electric Grid Is Damned Hard by Maggie Koerth-Baker at FiveThirtyEight
• Exploring microfluidics…using Lego? by Emi Schutz at Chembites
• Researchers Discover New Molecular Properties of Water at Science-News.com
• Meteorite Bombardment Likely Created the Oldest Rocks on Earth by Meghan Bartels at Space.com
• Is Humanity About To Accidentally Declare Interstellar War On Alien Civilizations? by Ethan Siegel at Starts With a Bang! 
• MIT scientists crack the case of breaking spaghetti in two by Jennifer Ouellette at Ars Technica
• LHC physicists embrace brute-force approach to particle hunt by Davide Castelvecchi at Nature News and Comment
• Podcast of the week: Heatwaves: the next silent killer? by Graihagh Jackson at Guardian Science Weekly
• Smokey superlatives: widespread wildfire impacts seen from as far away as a million miles from Earth by Tom Yulsman at ImaGeo
• Bird Species Collapse in the Mojave, Driven by Climate Change by Amanda Heidt at KQED Science
• U.S. energy research agency doesn't need a scientist at the helm, Congress tells nominee by Jeffrey Mervis at Science
• How To Make A Civics Education Stick by Emily Cardinali at MindShift 

Check back next week for more great picks!