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Science Corner Articles

Rounded Boulders Spokane

Rounded Boulders in Spokane Ice Rafted Erratics? Q – I have noticed places around Spokane where there are large accumulations of similarly-size boulders. They are smooth and generally about a meter in diameter.. The type of stone varies, but none...

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The first people in the Americas

The first people to arrive in the Western Hemisphere were Indigenous Americans, who were descended from an ancestral group of Ancient North Siberians and East Asians. They likely traveled along the Bering Land Bridge by land or sea. When the first Americans...

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Evidence Elsewhere

Evidence Elsewhere of Ice-Age Floods? Q – Is there evidence elsewhere in the world of ice age floods? Intuitively, I would think glaciers dammed other rivers, created lakes and then eventually collapsed? A – Your instincts are correct.  The rivers...

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How do we know how old Earth is?

By measuring radioactive elements in rocks from Earth and other parts of the solar system, scientists can develop a timeline of our planet’s early years. Earth is roughly 4.54 billion years old. In that time, it has seen continents form...

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Badger Mountain Landslide

Badger Mountain Landslide Potential? Q – With all the homes being built on and around Badger mountain in the Tri-Cities, is there any danger of landslides, similar to what is happening at Rattlesnake Hills? I’m unfamiliar with the geology there,...

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Video – How Earth Has Changed in 1.8 Billion Years

Among the planets in the Solar System, Earth is unique for having plate tectonics. Mapping our planet through its long history creates a beautiful continental dance — mesmerizing in itself and a work of natural art. This is the first time...

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Ancient British Isles Ice Sheet Time-Lapse Animation

The rapid decline of the British-Irish Ice Sheet thousands of years ago may hold lessons for how melting ice sheets in Greenland and Antarctica will influence sea-level rise in the future. In an animation that spans tens of thousands of years,...

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The Pulse of Rocks

“All creatures, objects, places, and elements have a spirit.” Patrick Saltonstall, Sugpiag (Aleut) Are rocks alive? Hmm. You might be visualizing a small stone or large boulder just sitting there…doing nothing. If life has to originate from a cell, then...

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