A Field Guide to the North American Cold Chain

?w=800" alt=""/>So far in the “Field Guide” series, we’ve mainly looked at critical infrastructure systems that, while often blending into the scenery, are easily observable once you know where to look. https://hackaday.com/2025/07/17/a-field-guide-to-the-north-american-cold-chain/

https://hackaday.com/2025/07/17/a-field-guide-to-the-north-american-cold-chain/