A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...

This story appears in the January/February 2017 issue of National Geographic History magazine. Amelia Blanford Edwards was one of a stream of European travelers drawn to see the wonders of Egypt at ...

When it comes to finding the ideal location for your Christmas tree, the usual considerations are centered around where it looks best, can be enjoyed by guests inside and out, and has the ideal ...

January 5, 2026 • The Child Care and Development Fund sends money to states to help make child care more affordable for low-income families. Allegations of fraud in Minnesota have put the program ...