Whitest paint in world to be sold, could cool homes and replace AC

Xiulin Ruan, professor of mechanical engineering at Purdue University, holds up his laboratory sample of the whitest color ever.

The paint reflects 98.1% of the solar radiation and at the same time emits infrared heat. How soon until it is on the shelves of a large retailer? The paint is intended to be used on roofs, including shingles and metal roofs. The lead researcher behind the whitest paint ever made says the highly reflective … Read more

iOS 15 public beta arrives, Android App Bundles to replace APKs, app consumer spend hits new record – TechCrunch

Google Play slashes commissions, Apple sued over scammy apps, YouTube launches a TikTok clone in the US – TechCrunch

Welcome back to This Week in Apps, the weekly TechCrunch series that recaps the latest in mobile OS news, mobile applications and the overall app economy. The app industry continues to grow, with a record 218 billion downloads and $143 billion in global consumer spend in 2020. Consumers last year also spent 3.5 trillion minutes using apps on Android devices … Read more