The skylights covering the roof provide interior lighting, as well as additional height inside and out.

BBC: An Alvar Aalto tour of Finland

While P2i describes its invisible "hydrophobic layer" as covering the exterior and interior of a product, HzO touts what it calls "WaterBlock" technology, which is applied to the internal circuitry of a device to protect it from moisture.

CNN: Waterproof phones and tablets make a splash

We have some stats here on the fact that last month, the Department of the Interior held a major oil and gas lease sale covering more than 21 million acres in the Gulf of Mexico that are currently not leased.

WHITEHOUSE: Press Briefing

In what other profession could I simply call up a former U.S. Secretary of the Interior and schedule a lunch meeting that turns into an engrossing half-day visit covering dozens of issues (including exchanging book lists)?

FORBES: Osha Gray Davidson: On Leaving