Posts treating: "Earth"
Wednesday, 23 April 2014
Today was Earth Day, 2014. For many, it was a day to celebrate the Earth, to give thanks for its fruitfulness, and to express concern about threats to both the planet and we humans that inhabit it. As a Christian, I also rejoice on Earth Day in the Creator, who has graciously placed us both
I love Earth Day as much as the next guy, but I have little use for it. To the geologist, every day is Earth Day, and the rest of the crowd seems to be singing from a different hymnal. So let me offer for your delectation three different essays about the occasion:...Read Full
Over 200 years ago, we began to glimpse the outlines of the great engine that sculpts and maintains the Earth as we know and love it. It took a century and a half to come up with a paradigm—a body of theory and worldview—that we could sink our teeth into: plate tectonics. Today the general public is familiar with the basics of plates. But this quiz gets into the deep details that only a Geo-Whiz has mastered. Could you be one? Give the quiz a
The information that is gathered during these marine geoscience expeditions contributes hugely to our knowledge and understanding of how the Earth evolved and is still evolving. It underpins our models of climate change, the emplacement of valuable minerals and the distribution of natural hazards in both space and time.
I love the way Bob (one of our amazing geomagnetists, who uncovers the history and magnetic secrets of the Earth by looking at tiny cubes of mud!) so willingly agreed to model this beautiful rose. What more fitting setting could there be? Here is an ‘undertaker’, in a hard hat, in the middle of the ocean, with a flower of remembrance!
In geology, the rocks have a way of messing with our pretty schemes. One instance I'm thinking of involves the base of the geologic time scale. The Earth itself is about 4.5 billion years old--but the time scale starts at the base of the Archean Eon with a time unit called the Eoarchean Era, running from 4.0 billion years ago (4 Ga) to 3.6 Ga. Like most of the Precambrian time periods...Read Full
“Did life first arise on Earth in warm, gentle springs on the sea floor? Researchers are putting together the chemical pieces of how this process might have occurred.” Quoted from the NASA press
The monthly newsletter for Earth Science Week is available. Don’t wait until fall to prepare for Earth Science Week 2014 (October
Scripps Institution of Oceanography features Lihini Aluwihare: “In my field I’m called an organic geochemist. In a very basic sense, I’m using molecules to tell a story about the processes on Earth that involve organisms. If you think about the number of different molecules that are on Earth most of them are organic, meaning they
In geological terms, a “rift” is an area of Earth where the planet’s crust is separating from the mantle beneath. One of the most extensive rift systems is found in[...]
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With life, legged and finned, Earth had been teeming,
Slitherers, predators, graceful trees tall …
Now, of these species, we are only dreaming:
Glossopteris, trilobites, eurypterids,
Guest commentary from Drew Shindell There has been a lot of discussion of my recent paper in Nature Climate Change . That study addressed a puzzle, namely that recent studies using the observed changes in Earth’s surface temperature suggested climate sensitivity is likely towards the lower end of the estimated range. However, studies evaluating model
huffingtonpost.com Earth’s tectonic plates may have taken as long as 1 billion years to form, researchers report today in Nature. READ
A few academics from the department were invited to mission control in Germany to watch the launch of the first of a suite of earth observation satellites as part of the European Space Agency‘s flagship Copernicus program. Sentinel-1a, launched yesterday, … Continue reading
Carolina Cavazos-Guerra, Germany The Saharan desert has one of the most extreme climates on Earth. The dust loading and thermodynamics over this region are unique, and have major impacts on the climate of North Africa, Europe and the Atlantic. Fennec is a large-scale programme designed to tackle one of the world’s key climate regions by delivering
For many people, the island of Aruba probably generates images of Caribbean vacations and sunny beach resorts. However, those images should also include wind turbines, solar panels and renovated infrastructure, to capture the sustainability agenda that is moving Aruba towards a fossil fuel-free economy.
Last week, Earth Institute Executive Director Steven Cohen hosted the prime minister of Aruba, Mike Eman, for a discussion on Aruba’s Vision for Creating Sustainable Prosperity. The talk [...]
This month, Jupiter remains well placed for evening observing all spring. Look for it high in the west at dusk. Mars is up virtually all night long this month. On April 8, Earth passes between the Sun and Mars. This … Continue reading
This week Earth will overtake Mars in its orbit and will be at one of its closest positions to the planet. That will make Mars especially large and red in the night sky. Then, after midnight on April 15th a lunar eclipse will occur. (Details on the lunar eclipse in a Washington Post
'The 2010 Eruption of Eyjafjallajokull, Iceland, and the impacts of volcanic ash on aviation'Dr. Jeremy Phillips. reader in Physical Volcanology, School of Earth Sciences, University of BristolThe relatively moderate eruption of Eyjafjallajokull from March to May 2010 produced widespread dispersion of fine volcanic ash over Northern Europe resulting in airspace closure for six days and significant economic losses.Further details from Bath Geological Society website 7.30 BRLSI, 16 Queen Square, [...]
The WMO has a report out this week about the climate of 2013, and while you can read the whole thing in 20 minutes, a special edition at the end is a must read. You can get the entire report here, but I am reproducing the last section, because it is a short but fascinating discussion of an attribution study. In atmospheric science, an attribution study looks at the causes