The kilogram you know is so over

Nov 16, 2018
It's the final unit of measurement to stop being based on a physical standard.
NIST's platinum-iridium kilogram K92 (front) with stainless-steel kilogram masses in the background.
J.L. Lee/NIST

The darkest building on the planet is at the Olympics

The structure in Pyeongchang is painted with what its maker says is the darkest man-made substance, a material that absorbs 99 percent of light.
The Hyundai Pavilion at the Pyeongchang Winter Olympics in South Korea, designed by Asif Khan, is coated with Vantablack VBx2.
Luke Hayes

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