Black History Month: Ruby Greene preserves history at cemetery

Why Ruby Greene is preserving African American history

Why Ruby Greene is preserving African American history

Duke Energy helps support repairing historic Hillcrest Cemetery in Raleigh, N.C.

Could these habits be wasting energy in your home?

Could these habits be wasting energy in your home?

9 ways to build energy efficiency habits around the house

Craig Merrilees wins EV drag racing championship

Craig Merrilees wins EV drag racing championship

California solar engineer’s interest in renewables leads to an EV drag racing championship

Retro photos: Table talk

Retro photos: Table talk

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