A 5-year-old superhero fan born without a left hand now has a bionic arm that looks like Iron Man’s. “Grandmother of Juneteenth” Opal Lee moved into her new house on the lot of her childhood home she had to flee over 80 years ago. A wildlife photographer snapped the first photo of a newborn white bison calf that fulfills a hopeful Lakota prophecy. A potentially habitable planet the size of Earth has been discovered. Plus, the world’s largest 3D printer is building homes made from wood fiber in Maine.

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