Whatever Happened to All the Moon Trees? – Atlas Obscura

Moon Trees were planted across the country, including a sycamore in Philadelphia's Washington Square (left and right) and a loblolly pine in Sebastian County, Arkansas (middle). The one in Philadelphia was replaced with a clone.

Many of the “Moon Trees” didn’t fare so well back on Earth.

Source: Whatever Happened to All the Moon Trees? – Atlas Obscura

In Upstate New York, Ancient Arthropods Can Get Turned Into (Fool’s) Gold – Atlas Obscura

Pyritized trilobites aren’t just flashy—they preserve incredible detail.

Source: In Upstate New York, Ancient Arthropods Can Get Turned Into (Fool’s) Gold – Atlas Obscura

World’s oldest cave art: Half-animal, half-human hybrids depicted on oldest discovered cave art – CNN

Caves of Lesotho hold thousands of years of southern Africa history

Cave art depicting a hunting scene has been found in Indonesia dated to 44,000 years old, making it the oldest rock art created by humans.

Source: World’s oldest cave art: Half-animal, half-human hybrids depicted on oldest discovered cave art – CNN

Nuro’s driverless delivery robots will start serving Walmart customers in Houston – The Verge

Nuro, the self-driving startup founded by two ex-Google engineers, is expanding its pilot robot delivery service in Houston, Texas, to include Walmart customers. The company has been making grocery deliveries in Houston with its fleet of autonomous Toyota Prius vehicles since March. Now the company plans to roll out its custom-built R2 prototype vehicle to help supplement its delivery duties.

Source: Nuro’s driverless delivery robots will start serving Walmart customers in Houston – The Verge

Scientists 3-D Print Skin That Develops Working Blood Vessels | Innovation | Smithsonian

A promising new technique could lead to lasting skin grafts after burns or other injuries

Source: Scientists 3-D Print Skin That Develops Working Blood Vessels | Innovation | Smithsonian