Big-box stores could help slash emissions and save millions by installing solar panels on their roofs. So why aren’t more of them doing it?

CNN  —  As the US attempts to wean itself off its heavy reliance on fossil fuels and shift to cleaner energy sources, many experts are eyeing a promising solution: your neighborhood big-box stores and shopping malls. The rooftops and parking lot space available at retail giants like Walmart, Target and Costco is massive. And these…

These were the best and worst places for air quality in 2021, new report shows

CNN  —  Air pollution spiked to unhealthy levels around the world in 2021, according to a new report. The report by IQAir, a company that tracks global air quality, found that average annual air pollution in every country — and 97% of cities — exceeded the World Health Organization’s air quality guidelines, which were designed…

Nelly Cheboi, who creates computer labs for Kenyan schoolchildren, is CNN’s Hero of the Year

CNN  —  Nelly Cheboi, who in 2019 quit a lucrative software engineering job in Chicago to create computer labs for Kenyan schoolchildren, is the 2022 CNN Hero of the Year. Online voters selected her from among this year’s Top 10 CNN Heroes. Cheboi’s nonprofit, TechLit Africa, has provided thousands of students across rural Kenya with…

A French photographer offers an unexpected view of the United States — through its many strip clubs

CNN  —  Some people travel the world in search of adventure, while others seek out natural wonders, cultural landmarks or culinary experiences. But French photographer François Prost was looking for something altogether different during his recent road trip across America: strip clubs. From Miami to Los Angeles, Prost’s latest book “Gentlemen’s Club” charts his route…

Scientists identify secret ingredient in Leonardo da Vinci paintings

Editor’s Note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. CNN  —  “Old Masters” such as Leonardo da Vinci, Sandro Botticelli and Rembrandt may have used proteins, especially egg yolk, in their oil paintings, according to a new study. Trace quantities of protein…

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