Warm igloo explains how snow shelters retain heat.

An igloo is a shelter built from snow that can survive harsh Arctic winters. A documentary-style episode from Simple Things Surprising Histories explains how thermodynamics and Inuit engineering principles help igloos keep occupants warm.

An igloo is a shelter built entirely from snow that can endure extreme Arctic winters. A documentary-style episode from Simple Things Surprising Histories explores how these snow houses use principles of thermodynamics and traditional Inuit engineering. The film focuses on the physics of insulation and how architectural design traps body heat. The presentation links basic scientific ideas with practical building methods used in Arctic environments. How igloos work: - Igloos are constructed from blocks of compacted snow rather than open snowdrifts. - Snow acts as an insulating material because it contains many trapped air pockets. - The dome shape and layered construction reduce heat loss and help retain warm air inside. - The episode discusses thermodynamics alongside Inuit building principles to explain this performance. Summary: The episode highlights how traditional Inuit engineering and basic thermodynamics enable snow shelters to retain warmth in extreme cold. Undetermined at this time.