5 stories making science news this week: A Pacific ‘superstructure’ and an ancient Roman bullet

5 stories making science news this week: A Pacific ‘superstructure’ and an ancient Roman bullet

This week’s science news has revealed an enormous “superstructure” bigger than Idaho growing on the seafloor, an ancient bullet inscribed with the name of Julius Caesar, and an extinct “hypercarnivorous” grizzly bear that was actually mostly vegetarian.

‘Superstructure’ growing on the Pacific seafloor since the dinosaur age

The Melanesian Border Plateau is located east of the Solomon Islands and covers an area bigger than Idaho. (Image credit: olli0815/Getty Images)

An undersea plateau in the Pacific Ocean that is bigger than Idaho first started forming with volcanic eruptions during the Cretaceous period (145 million to 66 million years ago), and it is still growing today. 

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