What can scientists do with hijacked sperm? How can you avoid 'purchase regret'? Find out in ScienceSeeker's picks of the best posts for the week of December 11-17 2017 #sciseekpicks #scicomm

The mysteries of stars and comets, modern-day evidence for evolution, and the latest insights on how we think. These are among the topics covered by picks the ScienceSeeker editors have made of their favourite posts within their respective areas of interest and expertise. Here is the full round-up of the Science Seeker Editors’ Selections for the past week:

Cassiopeia is a furnace that makes elements. 

• Edible Food Packaging May Cut Down on Waste by Erica Curles at SciWorthy
• Hijacked sperm carry chemo drugs to cervical cancer cells by Alice Klein at New Scientist
• DNA Snapshot Helps Drexel Researchers Uncover Diseases Lurking in Ambulances by Britt Faulstick at Drexel News Blog
• How to Avoid "Purchase Regret" By Conor Artman, Joseph Sherlock, Dan Ariely at Scientific American
• Chemistry Advent 2017 by Andy Brunning at Compound Interest
• Chandra Reveals the Elementary Nature of Cassiopeia A at ChandraBlog 
• Ask Ethan: Why Don’t Comets Orbit The Same Way Planets Do? by Ethan Siegel at Starts With a Bang!
• Simulating Physics by Sonia Fernandez at The University of California Santa Barbara Current
• Artificial Intelligence is Killing the Uncanny Valley and Our Grasp on Reality by Sandra Upson at Wired  
• Podcast of the week: Face Recognition and Identity with Brad Duchaine and Matteo Martini at Science for the People
• Positive parenting gets “under the skin”, showing up years later in the cortisol response by Alex Fradera at British Psychological Society Research Digest
• Scientists Can Now Inject Information Directly Into The Brains Of Monkeys by Daniel Nelson at Science Trends
• Are Bird Feeders Driving Evolution Of Longer Beaks In British Tits? by GrrlScientist 
• Saving Sumatran orchids from deforestation, one plant at a time by Sean Mowbray at Mongabay
• ‘A different dimension of loss’: inside the great insect die-off by Jacob Mikanowski at The Guardian
• ‘A vicious cycle towards extinction:’ Hunting and trade can push even abundant wildlife populations to the brink by by Mike Gaworecki at Mongabay
• Rising Sea by Tamino at Open Mind

Check back next week for more great picks!