Ploughmarks formed by unusually flat-bottomed icebergs in the central Barents Sea (Red is 240m water depth; purple is 248m) It is as if a child has been doodling with large coloured crayons. What you see are actually the great gouge marks left on the seafloor when the keel of a giant block of ice has dragged through the sediments. The arcs and loops record the movement of the berg as it turns abou

Starting November 13, 2024, all Earth Engine access will require a Cloud project. We will be limiting quotas for accounts without Cloud projects starting September 16, 2024. A planetary-scale platform for Earth science data & analysis Powered by Google's cloud infrastructure watch video Meet Earth Engine Google Earth Engine combines a multi-petabyte catalog of satellite imagery and geospatial data

2,980 large and medium airports with scheduled services from OurAirports. Each region is closer to a particular airport than any other. This partitioning of the sphere is called a spherical Voronoi diagram. Most Remote Point The point at … is furthest away from any airport in the above dataset; … from the nearest three airports. This is the circumcentre of the Delaunay triangle with the largest ci

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Rivers connect Earth’s mountains and lakes to its oceans, creating lifelines that provide water, food, transportation and recreation along the way. Some rivers, like the Nile, bring life to barren landscapes that would otherwise be uninhabitable. Others, like the Mississippi, defy our best efforts to tame them. Rivers carve their way across the continents, some becoming ever more entrenched while

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Serving Suggestion: 1080p, lights off, volume up. Even better, go 'Original' for 4K. Click "Show more" for details about the sequence. ------------------------------------------------- Images: http://eol.jsc.nasa.gov/ Music: 'Fill My Heart' by Two Steps from Hell Editor: David Peterson Optional Extras: View in 4K by selecting 'Original HD' in settings. ------------------------------------------

Photographer Olivier Grunewald has recently made several trips into the sulfur mine in the crater of the Kawah Ijen volcano in East Java, Indonesia, bringing with him equipment to capture surreal images lit by moonlight, torches, and the blue flames of burning molten sulfur. Covered last year in the Big Picture (in daylight), the miners of the 2,600 meter tall (8,660ft) Kawah Ijen volcano trek up

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This visualization shows ocean surface currents around the world during the period from June 2005 through December 2007. The visualization does not include a narration or annotations; the goal was to use ocean flow data to create a simple, visceral experience. This visualization was produced using NASA/JPL's computational model called Estimating the Circulation and Climate of the Ocean, Phase II

土壌の肥沃さと土壌浸食は、歴史の流れを大きく変えてきた―より具体的に言えば、「土壌劣化」と「加速する侵食」という双子の問題が文明の運命を左右してきた。“泥に刻まれた歴史”を紐解くことで、それが見えてくる。 「土」をキーワードに歴史が解き明かされる様は、ときに鼻づまりが解消したかのような快感があり、とてもおもしろい！同時に、人間の業、とも呼べる「歴史の繰り返し」に恐れ慄く。 「あらゆる文化（芸術・科学）の基礎を成している文化とは農業である」と『栽培植物と農耕の起源』の著者、中尾氏は説いた。『銃・病原菌・鉄』という本は「人類の歴史」という大きなテーマを扱ったものだが、著者のダイヤモンド氏は全体の１/３を農業の成り立ちや栽培植物・家畜の伝播に割いていた。そのくらい説明の要する重要なポイントだということだろうと思う。 文明は、農耕が起こって、人口を養うに十分な食料と、かつ食料の余剰・備蓄が確保でき