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The layout of the interior spaces and the distribution of opaque and glazed cladding surfaces are optimized for minimal energy loss, maximum natural daylighting, and selective solar gain. This energy optimization combined with extensive building integration of photovoltaic and solar thermal systems allow the house to produce a net annual surplus of energy, more than is needed to supply the house and its electric vehicles.

Superconductivity describes the phenomenon where an electric current is able to travel through a material without any resistance - the material is a perfect electrical conductor without any energy loss.

ScienceDaily (Apr. 4, 2011) - Scientists at the Vienna University of Technology (TU Vienna) have developed a method to steer waves on precisely defined trajectories, without any loss. This way, sound waves could be sent directly to a target, avoiding possible eavesdroppers.

A Close Protection personnel is a security operative or an agent who works closely with a person or persons to protect them, usually a public figure, wealthy, or politically important figure(s) from danger: generally, physical attack, harassment, loss of private information, bullying, or other criminal offences.

Personal listening devices like iPods have become increasingly popular among young -- and not-so-young -- people in recent years. But music played through headphones too loud or too long might pose a significant risk to hearing, according to a 24-year study of adolescent girls.