Currently, geothermal energy – any heat energy derived from the Earth’s ground, at depths of a few metres to several ...

Cosmetics palettes like this one were used to grind cosmetic paints, such as galena or green malachite, with a pebble. There is a slightly polished area on the palette where the grinding would have ...

The Upper Jurassic-aged Haynesville Shale formation is a dark organic-rich, brittle (conducive to hydraulic fracing) mudstone-shale that lies between the Bossier and Cotton Valley Lime intervals.