US federal prison cell

US federal prison cell (ADX Supermax in Colorado)

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Tihar jail - prison in New Delhi, India

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Maximized prison cell from Philippines.

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Norwegian prison cell

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Ukrainian prison cell

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Polish prison cell

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Another prison cell: This one is from The Netherlands.

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Austrian prison cell

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How Germany does jail time

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Australian gaol cell located in Melbourne, Victoria.

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Giant sinkhole with a forest inside found in China. The sinkhole, aka tiankeng, is 630 feet (192 meters) deep, large enough to swallow St. Louis’ Gateway Arch - Experts also say species unknown to science could be hiding in this gaping hole

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The fishermen of the nomadic Bajau tribe are capable of holding their breath for up to 13 minutes at depths of 200 feet. They are capable of doing so due to a stunning example of natural selection. It was found that they have a spleen 50% larger than that of the average human.

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For the first time ever, scientists have grown plants in lunar soil

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Giant 15-meter robots with human VR pilots are building railways in Japan

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1953 ad comparing slide rules to IBM electronic calculator

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A view of the Earth, from Saturn.

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Albert Einstein before his famous photo with his tongue out

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The 27 installation disks of Windows 95

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The 3,200-year-old tomb of Queen Nefertari. The paintings are considered to be the best-preserved and most eloquent decorations of any Egyptian burial site.

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Sunlight enters the sanctuary of Amun-Ra in the temple of King Ramses III, Egypt.

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