Just because foreign companies can now invest in Mexico’s state-owned energy agency Pemex, it doesn’t necessarily mean they will. Seventy-five years of monopoly bred messy finances, debt, nepotism and corruption. But it’s too big an opportunity for some to pass up, and we’ll likely see U.S. companies involved with Pemex’s modernization. Next, our sustainability desk visits tech startups that are figuring out better places to put carbon dioxide than into the air — and some of their solutions make pretty useful products. Plus, the coal conversation continues with an update from Wyoming.