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The Science of Aliens: Have They Overcome Their Savage Past, or Might They Want to Eat Us? (www.airspacemag.com)

Reviewing our own species’ behavior suggests a cautious approach to contact with extraterrestrials.

Astronomers Find Secret Planet-Making Ingredient: Magnetic Fields (www.quantamagazine.org)

The 442ft-long superyacht designed to mimic an idyllic island resort (www.dailymail.co.uk)