AcademiaSTEMHumanitiesSocial SciencesAgriculture & Farming
  • Millennia have vanished, taking species and ecosystems with it. Fossils restore the broken mosaic of prehistory, providing insights into how animals lived and died. Recent riddles included glass pearls inside clams, where butterflies got their legs from and a toe that continues to defy explanation.

    10 Fascinating Fossils With Mysteries or Rare Features

    10 Fascinating Fossils With Mysteries or Rare Features

    by Jana Louise Smit2

  • This article looks at ten sandy beaches of extraordinary colour, what they are composed of and how they are formed, with illustrations of all ten

    10 Beaches of Unusual Colour

    10 Beaches of Unusual Colour

    by Greensleeves Hubs16

  • This article explains the science of how rainforests are formed, and explains their role in Earth's ecology and environmental health, as well as human impact on rainforests and their projected future.

    What Factors Control the Location of Rainforests?

    What Factors Control the Location of Rainforests?

    by Melissa Clason3

  • The notorious Ring of Fire, which runs all the way from New Zealand to Chile by way of the Aleutian Islands, is home to many of the most potentially destructive volcanoes on the planet.

    12 Dangerous Volcanoes Along the Ring of Fire

    12 Dangerous Volcanoes Along the Ring of Fire

    by Harry Nielsen4

  • Hydraulic fracturing is a type of drilling and mining for oil and natural gas. Fracking wells are typically built on shale deposits that contain significant reserves of natural gas. Fracking may be causing earthquakes, and uses chemicals that are toxic.

    Hydraulic Fracturing (Fracking)

    Hydraulic Fracturing (Fracking)

    by Liz Hardin3

  • The Bolshaya Udina volcano in Siberia is coming back to life. This Russian volcano situated along the dangerous Ring of Fire has shown so much seismic activity over the past few years that its classification has changed from extinct to active. Some scientists think that it could erupt at any time.

    Russian Volcanoes on the Ring of Fire

    Russian Volcanoes on the Ring of Fire

    by Harry Nielsen0

  • This guide will teach you how to estimate the classification of a soil and how to describe its characteristics, based on the Unified Soil Classification System. It is intended for use in construction materials testing but can be useful for anyone who works with soil.

    Visual-Manual Soil Classification and Description

    Visual-Manual Soil Classification and Description

    by Melissa Clason0

  • In terms of magnitude and damage, the Valentine earthquake is the largest recorded earthquake to have occurred in the state of Texas.

    The 1931 Valentine Earthquake

    The 1931 Valentine Earthquake

    by Liz Hardin0

  • Time is money. Even an amateur prospector can improve the odds of making some coin by classifying in conjunction with sluicing. Saving your back by shoveling once can cut the medical bills! A high banker can do all this and more. Fundamentals, design, physics, and mechanical descriptions follow.

    The Highbanker: An Automatic Power Sluice

    The Highbanker: An Automatic Power Sluice

    by John R Wilsdon0

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