In 1920, most of us used public transport. But the decline of the great American streetcar is about more than the automobile: "By the time [GM] was buying up these streetcar companies, they were already in bankruptcy."
The death of the steetcar
Subway tunnel heat-exchangers could heat and cool thousands of nearby apartments
In Numerical investigation of the convection heat transfer driven by airflows in underground tunnels (Sci-Hub mirror), a group of engineers from L'Ecole Polytechnique Fédérale de Lausanne and the Swiss Federal… READ THE REST
SpaceX launches Hyperloop pod design competition geared for students and indie engineering teams
The high-speed ground transport system was first described by Elon Musk in a 2013 white paper, and its first route would connect Los Angeles and San Francisco with an expected journey time of 35 minutes. READ THE REST
There's something about these binoculars that would make Batman jealous
TL;DR: These Digital Binoculars can see at night, snap photos, and record video. They're also only $90 (reg. $159.99). Most binoculars are great in daylight but nearly useless once the sun goes down.… READ THE REST
Your laggy PC deserves better – revive it with Windows 11 Pro with this Deal Days offer
TL;DR: Don't miss this Deal Days price drop that lets you grab Windows 11 Pro for less than $10 for life until July 20. Is newer really better? We certainly don't think so, especially since… READ THE REST
Bye-bye AirTags! The price just dropped on this card-sized tracker.
TL;DR: Get major savings on this versatile tracker that fits on everything. The price just dropped on a three-pack of KeySmart SmartCards — get three for $74.97 (reg. $119.97). Bluetooth trackers are the new-age… READ THE REST
