A pair of tweezers holds a graphene transistor fabricated on a silicon wafer. An I-Corps team from the University of Pennsylvania is working on scaling up their cheaper method of making high-quality graphene, an extremely strong, conductive material one atom thick that was the subject of a Nobel Prize last year.

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Paranormal investigator Noah Voss points a video camera at an electromagnetic frequency device to record any abnormal activity at the Sun Prairie Cemetery in Sun Prairie, Wis.

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Phil Pressel designed cameras for the government's top-secret Hexagon project. He's only recently been able to speak about his life's work.

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A screengrab shows the Google Wallet app being used to pay for items at a CVS store.

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These two images were taken at the same time of day — one with a digital camera, and one with an iPhone 4S.

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Arielle Schacter, 17, holds her hearing aid in a New York subway station. Hearing loop technology funnels a transit worker's voice into her ear, blocking out the subway noise behind her. Ashley Milne-Tyte for NPR hide caption

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A message honoring Steve Jobs is scrawled on a blacked-out window at an Apple store in Seattle.

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Walter Isaacson's biography of Apple co-founder Steve Jobs was published Monday, less than three weeks after Job's death on Oct. 5.

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A boat navigates along the Black River near the village of Tumbira, in the Amazon, northern Brazil, on Aug. 18. In a few weeks, Google will post a 3-D, on-the-ground view of Tumbira on Google Earth Outreach.

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Lance Cpl. Dakota Hicks, from Laharpe, Ill., connects a radio battery to a portable solar panel system in Sangin District, Afghanistan.

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A modern-day map is paired with a vintage photo of the Arc de Triomphe. Historypin hide caption

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The Picture Show

Post Your Pictures, Then Take A Walk Through History

The website Historypin is like a photographic trip down memory lane.

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