Monthly Archives: November 2022

The road to low-carbon concrete

Enlarge / Cement works, Ipswich, Suffolk, UK. (Photo by BuildPix/Construction Photography/Avalon/Getty Images) (credit: Construction Photography/Avalon via Getty Images) Nobody knows who did it first, or when. But by the 2nd or 3rd century BCE, Roman engineers were routinely grinding up burnt limestone and volcanic ash to make caementum: a powder that would start to harden…

Andy Cohen says Twitter was always a ‘cesspool’ even before Elon

Andy Cohen isn’t the first person you’d think to ask about Elon Musk’s Twitter takeover. Then again, the real-time drama of an egotistical billionaire starting social media feuds and making impulsive decisions very publicly sounds like fodder for a Real Housewives plot line.  It’s no secret that Cohen loves to stir the pot. He may…

NASA uncovered a network security flaw that could affect spacecraft

Researchers from the University of Michigan, University of Pennsylvania, and NASA have discovered a significant security flaw in networking technology used in spacecraft, airplanes, energy generation systems, and industrial control systems.  UoM’s news portal Michigan News reported the flaw abuses a network protocol and hardware system known as time-triggered ethernet, or TTE.  This system allows…