What's shaking on the Red Planet? Who would win a fight between a shark and a killer whale? Find out in ScienceSeeker's picks of the best posts for the week of April 22 - April 28, 2019 #SciSeekPicks #SciComm.

This week's best and brightest from the world of science news includes several stories surrounding climate change and the Extinction Rebellion movement that has been heavily featured in the media. Also uncover the science behind the sound of knitting and find out how AI could improve mental health. Many other important topics are covered in the ScienceSeeker editors' round up of their favourite posts of the week within their respective areas of interest and expertise:

• First Marsquake detected by NASA’s InSight mission by Paul Voosen for Science Magazine.

  

  The week gets off to a shaky start for our closest planetary neighbour.
  Credit: Kevin Gill via Flickr (CC BY 2.0)

• First "Marsquake" detected on Red Planet by Alex Witze for Scientific American.
• Dark-matter detector measures half-life of Xenon-124 that’s longer than the Universe’s age by Sci-News.com.
• Protected areas need to be more than just location leftovers of the world by Aleksandra Dolezal for Envirobites.
• I see climate change by Chandra Clarke for Citizen Science Center.
• #ExtinctionRebellion’s pink herring by The Manticore.
• Killer whale vs. great white? No contest — the shark always flees by Shreya Dasgupta for Mongabay.
• How will AI improve microgrid energy efficiency? by Megan Nichols via Schooled By Science.
• AI and mental health: big data and feelings by Anna Andrusaite for The Gist.
• Out of bounds: Why basketball players believe they weren’t last to touch ball by Jennifer Ouellette for Ars Technica.
• The emotional mind by Tom Cochrane via Imperfect Cognitions.
• This is your brain on cholesterol by Monica Reinagel for Scientific American.
• The case of intradialytic hypotension by Katie Wang for the Renal Fellow Network.
• How deep are your health roots? by Paige Jarreau for LifeApps.
• Who cares about making ammonia? You do by Derek Lowe for Science Translational Medicine.
• The science of knitting by Eleanor Hook at Physics Central.
• A big list of academic job interview questions (and how to answer them) by The Thesis Whisperer. 

Check back next week for more great picks!