Posts Tagged Geological Time

In Greenland’s Melting Ice, A Warning on Hard Climate Choices…

Greenland is melting at an unprecedented rate, causing vast quantities of ice to disappear and global sea levels to rise. The fate of the ice sheet is not sealed, but unless CO2 emissions are sharply cut, the long-term existence of Greenland’s ice is in doubt… Read the article here at Yale Environment 360: https://e360.yale.edu/features/in-greenlands-melting-ice-a-warning-on-hard-climate-choices Advertisements

, , , , , , , , , , , , , , , , , , ,

Leave a comment

New light on origins of modern humans…

Summary: The work confirms a dispersal of Homo sapiens from southern to eastern Africa immediately preceded the out-of-Africa migration… Read all about this research here at Science Daily: https://www.sciencedaily.com/releases/2019/03/190320101957.htm

, , , , , , , , ,

Leave a comment

Ancient rocks provide clues to Earth’s early history…

Summary: A research team has provided compelling evidence for significant ocean oxygenation before the GOE, ‘great oxidation event’, on a larger scale and to greater depths than previously recognized… Here’s the article from science daily: https://www.sciencedaily.com/releases/2019/02/190225112311.htm

, , , , , , , , , ,

Leave a comment

Why Does Earth Have an Atmosphere?…

Earth’s atmosphere is enormous, so far reaching that it even affects the International Space Station’s route. But how did this giant gaseous envelope form?… Read the article here (livescience.com): https://www.livescience.com/64825-why-earth-has-an-atmosphere.html

, , , , , , , , , , , , ,

4 Comments

The Most Interesting Science News Articles of the Week…

This recap takes us up into space, deep down into the ocean, and way back in history… Read it here at Live Science: https://www.livescience.com/50718-weekend-reading.html

, , , , , , , , , , , , , , , , ,

Leave a comment

Earth Once Swallowed Its Own Superocean. Could It Happen Again?…

The ancient supercontinent of Rodinia turned inside out as the Earth swallowed its own ocean some 700 million years ago, new research suggests… Read the rest of the article here at Live Science: https://www.livescience.com/64707-earth-swallowed-superocean.html

, , , , , , , , , , , , ,

Leave a comment

The Most Interesting Science News Articles of the Week…

Space, health, dinosaurs, and mathematics are just a few of the topics covered in this week’s interesting science news articles from LiveScience.com… Read the articles here: https://www.livescience.com/50718-weekend-reading.html

, , , , , , , , , , , , , , , , , , ,

Leave a comment

Photos: Large Numbers That Define the Universe…

Visit the following LiveScience.com link for some magnificent numeric depictions of planet Earth… https://www.livescience.com/63429-big-numbers-universe-photos.html

, , , , , , , , , , , , , , , , , , , , , , , ,

Leave a comment

Back to the Future of Climate Change…

Researchers at Syracuse University are looking to the geologic past to make future projections about climate change… Read more on this research here: https://www.enn.com/articles/55111-back-to-the-future-of-climate-change

, , , , , , , , , ,

Leave a comment

Scientists draw new connections between climate change and warming oceans…

Summary:  Earth scientists exploring how ocean chemistry has evolved found similarities between an event 55 million years ago and current predicted trajectories of planet temperatures, with regards to inputs of CO2 into the atmosphere and oxygen levels in the oceans. As the oceans warm, oxygen decreases while hydrogen sulfide increases, making the oceans toxic and […]

, , , , , , , , , , , , , , , , , ,

Leave a comment

We Are Now Living in a New Geologic Age, Experts Say…

Intro:  We are all in the midst of a new geological age, experts say. This age, dubbed the Meghalayan, began 4,250 years ago when what was probably a planetwide drought struck Earth, according to the International Union of Geological Sciences (IUGS)… Read three article here: https://www.livescience.com/63103-meghalayan-age-within-holocene-named.html

, , , , , , , , , , , ,

Leave a comment

The Galápagos Islands: Laboratory of Evolution…

The Galápagos Islands archipelago is home to a complex ecosystem with a fascinating geological history, as well as unique examples of plant and animal life. The islands’ flora and fauna inspired renowned naturalist Charles Darwin to formulate his theory of evolution, and thousands of tourists and scientists flock to the islands every year to further […]

, , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Leave a comment

Natural History: Alfred Wegener ~ Plate Tectonics & Continental Drift…

The following video presents an overview of the theory of plate tectonics and continental drift with a history of Alfred Wegener’s work…

, , , , , , , , , , , , , , , , ,

Leave a comment

Ice stream draining Greenland Ice Sheet sensitive to changes over past 45,000 years…

[from phys.org] A ribbon of ice more than 600 kilometers long that drains about 12 percent of the gigantic Greenland Ice Sheet has been smaller than it is today about half of the time over the past 45,000 years, a new study suggests… Read more at: https://phys.org/news/2018-05-ice-stream-greenland-sheet-sensitive.html#jCp

, , , , , , , , , ,

Leave a comment

‘Snowball Earth’ resulted from plate tectonics…

Summary:  About 700 million years ago, the Earth experienced unusual episodes of global cooling that geologists refer to as ‘Snowball Earth.’ Geologists now suggest that those major climate changes can be linked to one thing: the advent of plate tectonics… Read the article here at sciencedaily.com: https://www.sciencedaily.com/releases/2018/05/180507153141.htm

, , , , , , , , , ,

1 Comment

In Ancient Rocks, Scientists See a Climate Cycle Working Across Deep Time…

Scientists drilling deep into ancient rocks in the Arizona desert say they have documented a gradual shift in Earth’s orbit that repeats regularly every 405,000 years, playing a role in natural climate swings… Read more about this a enn.com: https://www.enn.com/articles/54446-in-ancient-rocks-scientists-see-a-climate-cycle-working-across-deep-time

, , , , , , , , ,

2 Comments

Origins of photosynthesis in plants dated to 1.25 billion years ago…

Intro:  The world’s oldest algae fossils are a billion years old, according to a new analysis… Read the article here at enn.com: http://www.enn.com/ecosystems/article/53513

, , , , , , , , ,

Leave a comment

What the Pliocene epoch can teach us about future warming on Earth…

Imagine a world where the polar ice sheets are melting, sea level is rising and the atmosphere is stuffed with about 400 parts per million of carbon dioxide. Sound familiar?… Read the rest of this article here at sciencenews.org: https://www.sciencenews.org/article/what-pliocene-epoch-can-teach-us-about-future-warming-earth

, , , , , , , , , , , , , , , ,

Leave a comment