The Download: greener cement, and the biggest tech stories of 2023
+ The worst technology failures of 2023. The Titan submersible, lab-grown chicken, and GM’s wayward Cruise robotaxis all made our annual run-down of the worst in tech. Read the full list. + How 2023 marked the death of anonymity online in China. As Chinese social media platforms move toward requiring users to disclose more information about their real identities, will we lose what made us want to be online in the first place? Read the full story. + Why last year marked the first time gene editing finally started living…