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Head Image Caption: Street level view of 3D-reconstructed Chelsea, Manhattan

Historians and nostalgic residents alike take an interest in how cities were constructed and how they developed — and now there’s a tool for that. Google AI recently launched the open-source browser-based toolset “,” which was created to enable the exploration of city transitions from 1800 to 2000 virtually in a three-dimensional view.

Google AI says the name is pronounced as “re-turn” and derives its meaning from “reconstruction, research, recreation and remembering.” This scalable system runs on Google Cloud and Kubernetes and reconstructs cities from historical maps and photos.

Imagine a mobile phone charger that doesn’t need a wireless or mains power source. Or a pacemaker with inbuilt organic energy sources within the human body.

Australian researchers led by Flinders University are picking up the challenge of “scavenging” invisible power from low-frequency vibrations in the surrounding environment, including wind, air or even contact-separation energy (static electricity).

“These so-called triboelectric nanogenerators (or TENGs) can be made at low cost in different configurations, making them suitable for driving such as personal electronics (mobile phones), biomechanics devices (pacemakers), sensors (temperature/pressure/chemical sensors), and more,” says Professor Youhong Tang, from Flinders University’s College of Science and Engineering.

As the Ford Bronco and Jeep Wrangler battle over traditional off-road supremacy next year, General Motors has its sights set on a new segment with a different competitor: Tesla.

The Detroit automaker resurrects the Hummer on Tuesday night as an all-electric “supertruck” that’s set to go on sale in roughly a year – likely ahead of Tesla’s Cybertruck. It will be GM’s first real test as a competitor against Tesla. It also will be the first vehicle with the company’s next-generation EV platform and batteries, known as Ultium.

GM had the time and resources to bring back Hummer with an internal combustion engine to directly compete against the upcoming Bronco and Wrangler, but decided against it.

Australia seems to be leading the way in terms of wind power as well. 😃


It was a big week for South Australia last week. First, as we wrote at the time, the state reached 100 per cent solar power (of state demand) for the first time on Sunday, October 11.

Then, just a few days later, the state reached 100 per cent wind power (of state demand), on Thursday, October 15.

This was not the first time for wind, as it occurs reasonably often and for sometimes lengthy periods, but the fact that the two events occurred within days of the other are nevertheless important milestones. And although the transition to clean energy is far from complete, it does give some insight into what the state Liberal government’s target of “net 100 per cent renewables” by 2030 might look like.