Hikes will be held on two upcoming Friday mornings focusing on the trees at the Davidson-Arabia Mountain Nature Preserve in south DeKalb County.

The tree hikes explore natural and historical resources at the preserve. Hikes begin at 8 a.m. Friday and Sept. 20 at the preserve’s nature center, 3787 Klondike Road, near Lithonia.

Information: 770-492-5220.

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Inventor Lonnie Johnson stands with his Super Soaker water guns at JTEC Energy on Wednesday, Oct. 29, 2025, in Atlanta. Johnson, a former NASA engineer, is currently working on a new energy technology through his company’s JTEC device that turns thermal heat into usable energy. (Natrice Miller/AJC)