Numlock Sunday: Lina Zeldovich and emissions-slashing with tech

By Walt Hickey

Quick housekeeping note before we get into it: three months ago all you paying subscribers got notified about a cool new feature as part of your membership, the ability to give a totally free 3-month paid subscription to friends who might like Numlock! It’s a neat perk and helps spread this newsletter through word of mouth, so feel free to

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