Purdue said 'whitest paint' could fight climate change. But where is it?

AI-assisted summary

A Purdue professor invented the "world's whitest paint" in 2021, which could reflect over 98% of sunlight to cool buildings and combat climate change.

Despite significant media attention and praise, the paint has not yet been made commercially available to the public.

Experts and activists express frustration over the delay, emphasizing the paint's potential to address rising temperatures and the urban heat island effect.

WEST LAFAYETTE — When Purdue professor Xiulin Ruan unveiled the “world’s whitest paint” in 2021, it was heralded nationwide as being history’s next most important invention.

Guinness declared it the whitest paint ever created. Activists, experts and media rushed to shower praise. The New York Times called it “superheroic.” PBS wondered openly whet