bog iron ore

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Earth from space. Full-hemisphere views of the Earth showing Hurricane Linda at its peak approaching Baja California on 1997 September 11.

What Is Earth’s Velocity?

Lightning over the outskirts of Oradea, Rom., during the thunderstorm of August 17, 2005.

16 Questions About Earth’s Atmsophere and Weather Answered

Solar system illustration. (planets; sun)

Why Are Planets Round?

Remarkable new details of Pluto's largest moon Charon are revealed in this image from New Horizons' Long Range Reconnaissance Imager (LORRI), taken late on July 13, 2015 from a distance of 289,000 miles

Why Is Pluto No Longer a Planet?

Sunlight shining on leaves. Photosynthesis

What Does Photosynthesis Produce?

Discover

A human Inuit skull in a stone chambered cairn in Ilulissat in Greenland. These ancient graves are pre christian and are at least 2000

14 Tough Questions Answered

Super Typhoon Noru over the western tropical Pacific Ocean as observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA Aqua satellite July 31 2017

What Is the Difference Between a Typhoon and a Super Typhoon?

Santa Claus flying in his sleigh, christmas, reindeer

Was Santa Claus a Real Person?

The Cheshire Cat is a fictional cat from Lewis Carroll's Alice's Adventures in Wonderland. (Alice in Wonderland)

11 Banned Books Through Time

Rural Irish landscape, Sligo, Ireland.

Why Is Ireland Two Countries?

Thumbnail for flags that look alike quiz Russia, Slovenia, Iceland, Norway

Flags That Look Alike

Thanksgiving Turkey with all the sides

Why Do We Eat Turkey on Thanksgiving?

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ore iron oxide mineral processing uraninite bauxite hematite laterite galena carnotite scheelite sphalerite banded-iron formation