A drug called carfentanil, used as an elephant tranquilizer in China, has killed at least two people in Colorado and deepened the state’s opioid crisis. Then, the prospect of Trump- administration tax cuts has softened the market for tax credits that help finance affordable housing. And, architect Ed White made his mark on Colorado with building design and historic preservation work. He was also a friend of beat-generation writer Jack Kerouac. Plus, as spring fly fishing season begins, a Colorado angler’s book describes a Japanese technique known as Tekara. Also, two Denver moms plan a Mother’s Day version of their show “Pump and Dump” this weekend.