Cobalt Red
by Siddharth Kara
The hidden human cost behind the battery in everything I build — hard to read, harder to unsee.
- Status
- Read · February 2024
- Bought
- February 29, 2024
- For
- Engineers who care where their hardware comes from · Anyone reaching for a 'sustainable tech' label · Readers who want supply-chain reality, not slogans
The one-paragraph verdict
Kara walks the cobalt belt of the DRC on foot and reports what he sees — children in pits, collapsed tunnels, families paid in cents — and the first-person testimony is the book’s real strength. It refuses the clean abstraction of “the supply chain” and puts faces on the bottom of it. The cost is tone: it’s relentless, occasionally repetitive, and Kara inserts himself into the narrative more than the material needs. Critics have also questioned the rigor of some figures and the breadth of his sourcing, which is fair. None of that changes the core fact the book makes impossible to ignore.
Who should read it
Anyone who builds, buys, or specs hardware — and especially anyone about to slap a “green” or “sustainable” label on a battery-powered product. It’s for readers who want the ground truth under the ESG slide deck. If you only want a balanced policy treatise with every claim triple-sourced, this isn’t that book, and you’ll bristle at the advocacy.
Where it earned its place
It changed a habit more than a belief: I no longer say “clean energy” or “ethical hardware” without a small mental asterisk. There’s no platform tie-in here — it’s on the off-duty shelf — but it’s the kind of book that quietly recalibrates how you read every other sustainability claim.
Skip it if…
Skip it if you want measured both-sides analysis or detailed remediation paths — Kara is here to indict, not to prescribe. If relentless first-hand misery without much relief is more than you want right now, that’s a valid pass.