Does the discovery of water on a habitable-zone planet mean we've found Earth 2.0? What weird bubbles have been found at the centre of the Galaxy? Find out in ScienceSeeker's picks of the best posts for the week of Sept 9 - Sept 15, 2019 #SciSeekPicks #SciComm.

In this week's selection of the best articles and posts from the world of science news, find out why bees are getting punched to make ice cream, and explore the risk of oil spills from long-forgotten sunken ships. ScienceSeeker editors' favourite posts within their respective areas of interest and expertise also cover many other important and exciting topics. Why not have a read, inform yourself, and indulge your scientific curiosity?

• There is a pair of weird, gigantic bubbles at the centre of our galaxy by Leah Crane for New Scientist.

  

  The bubbles are just visible as the smoky smudges above and below the bright central line of the galaxy.
  Credit: Caption - New Scientist, Image - South African Radio Astronomy Observatory (CC BY-ND 3.0)
• First water detected in the atmosphere of a habitable-zone planet by John Timmer for Ars Technica.
• Draw your own circuits with liquid metal by Charlie Crowe at Chembites.
• Guest post by Dan Wallace: A machine learning system playing a game to super-human levels, using only plastic boxes and beads by Dan Wallace for Dr. Mirjam S. Glessmer's blog.
• Small sea lions with big personalities by Bethany Augliere for Hakai magazine.
• The four faces of Twitter user’s activity around science by Adrián A. Díaz-Faes for Elephant in the Lab.
• This bee gets punched by flowers for your ice cream by Gabriela Quirós for KQED Science.
• A kangaroo unlike those we know by Ian Connellan for Cosmos magazine.
• Extinction, empathy, endings, beginnings by Tamsin Edwards at All Models Are Wrong, a PLOSOne blog.
• As shipwrecks rust, oil spills are imminent by Chloe Williams for Hakai magazine.
• Hachimoji DNA: The eight-letter genetic code by Tent Tangpradabkul at Gem-net blog.
• New proto-dinosaur found in Colorado by Brian Switek for Scientific American.
• How the body’s nerves become accomplices in the spread of cancer by Kelly Servick for Science magazine.
• Experimenting with Resilience: Lessons from Grad School by Susanna Harris for Promega Connections.
• Crowdsourcing sharks: a citizen science success story by Alina Spera for Envirobites.

Check back next week for more great picks!