There are roof shapes and ratios that maximize heat retainment and energy efficiency and, interestingly, ancient Italian architects and builders seemed to know it, too.

The potential Western troop deployment to Ukraine being discussed in London should be described as a "reassurance force" rather than a "peacekeeping force", defence and diplomatic sources say.

He is a Chartered Market Technician (CMT). Porter’s five forces identify and analyze five competitive forces that shape every industry to help determine an industry's weaknesses and strengths.