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The Earth has a pulse — a 27.5-million-year cycle of geological activity

Geologic activity on Earth appears to follow a 27.5-million-year cycle, giving the planet a ‘pulse,’ according to a new study. Title: The Earth has a pulse — a 27.5-million-year cycle of geological activitySourced From: www.sciencedaily.com/releases/2021/06/210618134009.htmPublished Date: Fri, 18 Jun 2021 13:40:09 EDT News…. browse around here Horrific story of the week: http://www.magictouches.com/magic-tricks-videos/magpie/scripts/magpie_slashbox.php?rss_url=https://northdenvernews.com/feed check out this

Sulfur enhances carbon storage in the Black Sea

The depths of the Black Sea store comparatively large amounts of organic carbon. A research team has now presented a new hypothesis as to why organic compounds accumulate in this semi-enclosed sea and other oxygen-depleted waters. Reactions with hydrogen sulfide play an important role in stabilizing carbon compounds, the researchers posit. This negative feedback in

Ozone pollution has increased in Antarctica

Ozone is a pollutant at ground level, but very high in the atmosphere’s ‘ozone layer,’ it absorbs damaging ultraviolet radiation. Past studies have examined ozone levels in the Southern Hemisphere, but little is known about levels of the molecule in Antarctica over long periods. Now, researchers have analyzed more than 25 years of Antarctic data,

Diverse fossil flora from 400 million year ago

The analysis of very old plant fossils discovered in South Africa and dating from the Lower Devonian period documents the transition from barren continents to the green planet we know today. Title: Diverse fossil flora from 400 million year agoSourced From: www.sciencedaily.com/releases/2021/06/210608203733.htmPublished Date: Tue, 08 Jun 2021 20:37:33 EDT News…. browse around here Horrific story

Earth’s meteorite impacts over past 500 million years tracked

For the first time, a unique study has tracked the meteorite flux to Earth over the past 500 million years. Contrary to current theories, researchers have determined that major collisions in the asteroid belt have not generally affected the number of impacts with Earth to any great extent. Title: Earth’s meteorite impacts over past 500

Five million years of climate change preserved in one place

An international team of researchers has now succeeded in reconstructing changes in rainfall in Central Asia over the past five million years. The information preserved within the sedimentary succession provides the missing link for understanding land-water feedbacks for global climate. Title: Five million years of climate change preserved in one placeSourced From: www.sciencedaily.com/releases/2021/06/210603111951.htmPublished Date: Thu,

South Pole and East Antarctica warmer than previously thought during last ice age, two studies show

Glaciologists analyzed Antarctic ice cores to understand the continent’s air temperatures during the most recent glacial period. The results help understand how the region behaves during a major climate transition. Title: South Pole and East Antarctica warmer than previously thought during last ice age, two studies showSourced From: www.sciencedaily.com/releases/2021/06/210603171159.htmPublished Date: Thu, 03 Jun 2021 17:11:59

A shark mystery millions of years in the making

The biggest shark attack in history did not involve humans. A new study by earth scientists has turned up a massive die-off of sharks roughly 19 million years ago. It came at a period in history when there were more than 10 times more sharks patrolling the world’s oceans than there are today. Title: A

Is Earth’s core lopsided? Strange goings-on in our planet’s interior

Seismic waves generated by earthquakes travel through Earth’s solid iron inner core faster in the direction of the rotation axis than along the equator. Scientists created a core growth model to explain this. To fit seismic data, the model predicts that asymmetric growth of the core leads to crystal movement that preferentially aligns iron-nickel crystals