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A perfect negative crystal floating in space

A perfect negative crystal floating in space

What looks like a solid octahedron is actually a void inside a chunk of spinel, a gem best known as the centrepiece of the British queen's Imperial Crown

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Tumbling weeds: The rolling invasion of the US

Earth

Tumbling weeds: The rolling invasion of the US

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21st century nomads: Photos on the road less travelled

Earth

21st century nomads: Photos on the road less travelled

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The idyllic tropical island – now covered in concrete

Earth

The idyllic tropical island – now covered in concrete

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See the Minecraft nebula that Twitter found

Space

See the Minecraft nebula that Twitter found

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Ethiopia's blue volcano burns deadly sulphuric gas

Earth

Ethiopia's blue volcano burns deadly sulphuric gas

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Robo-camera snaps coastal brown bear on Alaskan beach

Life

Robo-camera snaps coastal brown bear on Alaskan beach

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A visual time machine into US history

A visual time machine into US history

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Peek inside a Russian cosmonaut's dressing room

Space

Peek inside a Russian cosmonaut's dressing room

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Nested interests: A bespoke farm for edible bird nests

Nested interests: A bespoke farm for edible bird nests

With the market for bird's nest soup at $5 billion a year, the natural supply is not meeting demand, so farmers are offering swiftlets good nesting spots

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Stealthy surfaces make for psychedelic laser scanning

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Earth

The white walker: Longest horse trek crosses icy lake

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Space

Sun traces giant figures-of-eight in the sky

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Earth

Colours of time smeared in mountain-sized tectonic rip

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