Rio-Tinto has the chance to respect indigenous people and not destroy Oak Flat.

In a statement, Chairman Simon Thompson vowed the company would “never again” allow this type of destruction to take place. Rio Tinto has promised to act “in ways that are sensitive and responsive to the values and expectations of Traditional Owners and Indigenous communities.”

The company has an opportunity to make good on that commitment by preventing the destruction of a site considered sacred by Indigenous people here in the United States. Rio Tinto holds controlling interest in Resolution Copper LLC, co-founded with another Anglo-Australian firm, BHP. Resolution Copper is developing a mine in southeastern Arizona to exploit one of the world’s largest-known untapped copper deposits. The copper ore lays under a tranquil, high-elevation expanse known as Oak Flat.

To the nearby San Carlos Apache Tribe, Oak Flat is holy ground. There are ancient petroglyphs on some of Oak Flat’s rock walls. In addition to evidence of shelters and cooking

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MIT Engineers Have Created a Completely Flat Fisheye Lens

Illustration for article titled This Perfectly Flat Fisheye Lens Could Help Shave Down Camera Bumps

Image: Felice Frankel/MIT

Fisheye lenses make for some cool photos, but their most distinctive feature is that the glass is curved. The need for multiple bits of curved glass makes fisheye lenses both bulky and expensive. However, engineers at MIT and the University of Massachusetts at Lowell have figured out a way to make a fisheye lens that’s completely flat and could be applied in consumer devices, medical applications, and more.

The method of flattening something that is known for being bubble-like is pretty clever. To do it, the engineers used something called a “metalens,” or a flat piece of glass measuring just a millimeter thick. On the back of the metalens, they then carved teeny structures to scatter incoming light in a way that produces the same type of ultrawide, panoramic images a fisheye lens would. More specifically, the metalens is made from a transparent piece of calcium

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