TLDR 2021-11-23

Walmart has partnered with DroneUp to deliver items via drone to customers within a 1.15-mile radius from a base in Farmington, Arkansas. Customers will be able to use the service seven days a week from 8 am to 8 pm. Flight engineers will control the drones to ensure orders arrive safely. The service will be expanded to more areas in the coming months.

Google Messages on Android can now properly display emoji reactions sent from the iPhone's Messages app. Before the update, Android users would see a separate text message when receiving an emoji reaction. The emojis sometimes appear different on Android. The feature is still rolling out, so it may not appear for all users yet. A screenshot of a chat with emoji reactions on Android is available in the article.

Rolls-Royce's 'Spirit of Innovation', an old-school tail-dragger airplane powered by an electric motor, has hit a top speed of 387.4 mph, smashing the speed record for electric airplanes. Electric airplanes aren't practical yet as batteries are 50 times less energy-dense than jet fuel, but they could be potentially used for short trips. The battery pack used in Rolls-Royce's plane is the most power-dense propulsion battery pack ever assembled. A picture of the plane is available in the article.

A team at the University of California-Davis has created jelly ice cubes made out of hydrogel that hold their shape at all temperatures. The hydrogel is made up of 10 percent organic gelatin and 90 percent water. The cubes can be cut into any shape or size and used like regular ice cubes, except that they won't melt when they thaw. Each cube can be reused up to 12 times without degradation and composted once discarded.

Beartype is a pure-Python PEP-compliant constant-time runtime type checker. It brings static typing to Python while still preserving the permissive benefits of duck typing. Beartype can be used to assure the quality of Python code beyond what tests alone can assure.

The Rust CUDA Project is an ecosystem of libraries and tools for writing and executing GPU code in Rust. It aims to make Rust a tier-1 language for extremely fast GPU computing using the CUDA toolkit. This repository contains libraries and tools to make CUDA usable with Rust, with crates for all corners of the CUDA ecosystem.

UberEats users in Ontario can now order cannabis from Tokyo Smoke, pickup-only. Users will need to confirm their age before they can make a purchase and ID will be required at the store. Uber has not confirmed whether it will offer cannabis purchases in other areas or if it will eventually offer delivery. The move targets the underground cannabis market, which accounts for 40 percent of all non-medical cannabis sales in Canada.

ConstitutionDAO raised $40 million to buy an original copy of the Constitution but failed. Due to high fees, many investors in the project will lose their investments. The admin team made several controversial decisions and then reversed them, causing chaos in the community. While the project was a mess, many still think of it as a success, with the DAO allowing people to go toe-to-toe in an auction against a hedge fund CEO.