Duke Energy recently celebrated a big birthday for one of its oldest workhorses — Mountain Island Hydroelectric Station in Gaston County, northwest of Charlotte. The dam and power station were built 100 years ago. But don't call it a historical relic. It was renewable energy before electricity's fossil-fuel era and it's expected to keep generating long after Duke closes its last coal-fired power plant in 2035.

A familiar name in real estate is returning to Charlotte. Trammell Crow first opened an office in the city in 1978 and went on to develop some of Charlotte's more notable buildings, like one Wells Fargo Center and the Charlotte Plaza building. This and more in this week's BizWorthy.

Charlotte-based Albemarle Corp. is taking steps to make its planned lithium mine in Kings Mountain climate-friendly. The company announced a deal Wednesday to supply Caterpillar with lithium for electric vehicles. Caterpillar will provide battery-powered mining equipment to Albemarle.

Mecklenburg County has one of the highest rates of HIV cases in the state and nation. Cases have leveled off recently but as free HIV testing is offered and residents are encouraged to get tested if they suspect they are infected, the numbers are predicted to rise.

Environmental advocates say that a provision in the new state budget will impede efforts to ban plastic bags and reduce solid waste pollution, especially among North Carolina's rivers.

Sarah Stevenson, who died Tuesday at 97, has shaped generations of Charlotteans with her leadership in education, politics and civic life.