About 93 percent of 3, 040 large U.S. hospitals used one or more day lighting or lighting conservation features, including tinted window glass (80 percent), reflective window glass (39 percent), external overhangs or awnings (47 percent), skylights or atriums designed to provide light (57 percent), automatic controls or sensors that increase or reduce lighting in response to the level of natural light (14 percent), and occupancy sensors that reduce lighting when rooms are unoccupied (46 percent).

FORBES: Heal Thy Self: U.S. Hospitals Are Huge Energy Hogs

Athletes do triple jumps down a 10-meter lane lined with infrared sensors to determine their energy level before a workout.

WSJ: U.S. Ski Team Pins Hopes for Sochi on Science

Our next level of comfort comes with intimate contact sensors, a wireless health option which will soon break out of the research labs.

FORBES: Ingestible, Implantable, or Intimate contact; How Will You Take Your Micro-scale Body Sensors

But wearables are superficial by nature and cannot provide the level of in-depth data of embedded sensors being developed for the body.

CNN: The wave of wearable computers

Google's self-driving cars, which use laser sensors and mapping technology, are examples of Level 3 cars, Mr. Friedman said.

WSJ: Self-Driving Cars Spark New Guidelines

Only after several weeks of treatment, researchers believe, do the sensors become desensitized to the new elevated serotonin level, allowing a patient's mood to brighten.

FORBES: Magazine Article

Accommodating these markers causes the highly-sensitive sensors to bend like a diving board and this bend indicates the level of virus in the body, explained lead investigator Dr Rachel McKendry of University College London and the London Centre for Nanotechnology.

BBC: 'Self-monitoring device' for HIV

Sensors automatically turn off lights after five minutes if they detect no movement and adjust the light level according to the available daylight.

CNN: Catalog company going lean and green

With three individual camera sensors to provide a more accurate multi-touch functionality, LG's new PC brings a higher level of precision to the touch screen experience.

ENGADGET: LG V300 all-in-one hands-on at Computex 2011 (video)