Rocks in Canada hold oldest evidence of life we’ve found

September 29, 2017 by  
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3.95 billion-year-old rocks could offer the oldest evidence we’ve found for life on Earth . A team led by the University of Tokyo found graphite in Labrador, Canada that they think is biogenic, or produced by living organisms. They contend this is the oldest evidence of life, as opposed to microfossils found earlier in Quebec , saying the dating process used in the latter was highly controversial. In March, the journal Nature published the findings of an international team of researchers who’d found fossils in Quebec that they said could be between 3.77 and 4.28 billion years old. Now, nine scientists at institutions in Japan say they’ve actually found the oldest evidence of life on this planet, and it’s in 3.95 billion-year-old rocks. Related: World’s oldest fossils discovered in Canada – and they’re 4 billion years old These researchers found graphite in sedimentary rocks. Tsuyoshi Komiya of the University of Tokyo said, “Our samples are also the oldest supracrustal rocks preserved on Earth.” Phys.org pointed out the Quebec fossils were found in a similar formation. The Japan team measured the isotope composition of the graphite to find it was biogenic, although the identity of the organisms that produced the graphite or their appearance are mysteries. Komiya said the team could work to identify the organisms by scrutinizing “other isotopes such as nitrogen, sulphur, and iron of the organic matter and accompanied materials.” They can also analyze the rock’s chemical composition to try and figure out the organisms’ environment . Other researchers, like geochemist Daniele Pinti of the University of Quebec at Montreal, seem impressed by the new team’s findings and process. He told CBC News, “For the moment, it looks very convincing.” Phys.org said that should the discovery be accurate, it would mean life sprung up on Earth a geological second after the planet formed around 4.5 billion years ago. Nature published the new study this week. Via Phys.org and CBC News Images via Wikimedia Commons and Tashiro, Takayuki, et al.

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Rocks in Canada hold oldest evidence of life we’ve found

Rocks discovered in Canada hold the oldest evidence of life

September 29, 2017 by  
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3.95 billion-year-old rocks could offer the oldest evidence we’ve found for life on Earth . A team led by the University of Tokyo found graphite in Labrador, Canada that they think is biogenic, or produced by living organisms. They contend this is the oldest evidence of life, as opposed to microfossils found earlier in Quebec , saying the dating process used in the latter was highly controversial. In March, the journal Nature published the findings of an international team of researchers who’d found fossils in Quebec that they said could be between 3.77 and 4.28 billion years old. Now, nine scientists at institutions in Japan say they’ve actually found the oldest evidence of life on this planet, and it’s in 3.95 billion-year-old rocks. Related: World’s oldest fossils discovered in Canada – and they’re 4 billion years old These researchers found graphite in sedimentary rocks. Tsuyoshi Komiya of the University of Tokyo said, “Our samples are also the oldest supracrustal rocks preserved on Earth.” Phys.org pointed out the Quebec fossils were found in a similar formation. The Japan team measured the isotope composition of the graphite to find it was biogenic, although the identity of the organisms that produced the graphite or their appearance are mysteries. Komiya said the team could work to identify the organisms by scrutinizing “other isotopes such as nitrogen, sulphur, and iron of the organic matter and accompanied materials.” They can also analyze the rock’s chemical composition to try and figure out the organisms’ environment . Other researchers, like geochemist Daniele Pinti of the University of Quebec at Montreal, seem impressed by the new team’s findings and process. He told CBC News, “For the moment, it looks very convincing.” Phys.org said that should the discovery be accurate, it would mean life sprung up on Earth a geological second after the planet formed around 4.5 billion years ago. Nature published the new study this week. Via Phys.org and CBC News Images via Wikimedia Commons and Tashiro, Takayuki, et al.

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Rocks discovered in Canada hold the oldest evidence of life

This twisting tower is made out of 2,000 3D-printed terracotta bricks

September 29, 2017 by  
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A team of researchers and students from the HKU Faculty of Architecture worked with Holger Kehne of Plasma Studio to create a beautiful twisted tower out of 2,000 3D-printed terracotta bricks. Each clay brick used to create the Ceramic Constellation Pavilion was individually printed in a unique shape or size using innovative robotic technology, which prints at a faster pace than most 3D printing machines and provides incredible versatility in the building process. The 12-foot pavilion was part of the inaugural “Robotic Architecture Series” workshop hosted by international property developer, Sino Group . All of the materials used in the project were made in the Robotics Lab at HKU’s Faculty of Architecture. By building the 3D tower the team sought to test the feasibility of robotically printed terracotta bricks. The printing process means that the clay bricks can be configured into distinct shapes and densities, adding an invaluable versatility to the design process. Related: Perforated screens made from reused terracotta tiles wrap around this house in Malaysia The team began with about 1,500 pounds of raw terracotta clay . Using the university’s innovative robotic technology with a rapid print time of 2 or 3 minutes for each brick, it took about three weeks to print the materials. After firing the bricks in an oven at 1,877 degrees Fahrenheit, students from the HKU Department of Architecture assembled the beautiful pavilion during the ten day workshop. + HKU Faculty of Architecture + Sino Group + Plasma Studio

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This twisting tower is made out of 2,000 3D-printed terracotta bricks

Puerto Rico electricity crisis sparks interest in renewable energy

September 29, 2017 by  
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Hurricane Maria has left swaths of Puerto Rico without power – and millions of people could have to go without electricity for months . The storm’s devastation has stirred new interest in obtaining more energy from clean sources like solar or wind . Energy experts say increasing renewables and transitioning from centralized grids to microgrids could boost resilience as Puerto Rico and other Caribbean islands weather storms. CARICOM, a Caribbean nation consortium, already hoped to hit 47 percent renewable energy by 2027. The recent hurricanes could act as a motivation to work for that goal. Caribbean countries in the past have relied mostly on imported fossil fuels , which are expensive both for the islands and for the environment . And storms can cripple power lines. Related: Puerto Rico could be without electricity for months due to Hurricane Maria There is an alternative, according to The Washington Post. Renewable sources, coupled with battery storage , powering small grids could offer more resiliency. Fossil fuels would offer backup—at least initially until battery storage becomes more affordable. The microgrids could be connected to a main grid but could also be isolated. With this new setup, the Caribbean could benefit from trade winds and solar panels. According to renewable energy expert Tom Rogers, who works at Britain’s Coventry University, solar systems in the tropics can “generate over one and a half times more than exactly the same PV system” installed in a location with a higher latitude like Europe. Rogers told The Washington Post, “You look at islands like Dominica, Anguilla, and other islands affected by the recent hurricanes, I’ve spoken to a couple of the utilities, and they say they would prefer to rebuild using distributed generation with storage, and just trying to reduce the amount of transmission lines. Because that’s where their energy systems fail. It’s having these overhead cables.” Via The Washington Post Images via Sgt. Jose Ahiram Diaz-Ramos/Puerto Rico National Guard and NOAA Satellites Twitter

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Scientists find evidence of lost continent beneath Mauritius

February 2, 2017 by  
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A group of geoscientists have uncovered an ancient secret. The scientists from German and South African research institutions found evidence of a formerly undiscovered continent beneath the small Indian Ocean island of Mauritius. This lost continent likely vanished into the ocean around 84 million years ago, undiscovered by humans until just recently. Three geoscientists realized zircon they found on Mauritius was much too old for the relatively new island which formed in the wake of underwater volcanic eruptions eight to nine million years ago. Volcanic eruptions on the island spewed out the zircon crystals that researchers now think may derive from an ancient continent linking India and Madagascar as part of the Gondwana supercontinent. Lewis Ashwal of University of the Witwatersrand , who is the lead author on a paper published online January 31 by Nature , said, “Mauritius is an island, and there is no rock older than nine million years old on the island. However, by studying the rocks on the island, we have found zircons that are as old as three billion years.” Related: Ancient ocean crust in the Mediterranean Sea may predate supercontinent Pangea Back in 2013, scientists found ancient zircons billions of years old in Mauritius beach sand, but that find was controversial as other scientists said the materials could have arrived at the beach from somewhere else. The new discovery lends credence to the idea that there once was a continent under Mauritius billions of years ago, as these zircons could not have been transported to the island via wind or waves, according to Ashwal. He said, “The fact that we have found zircons of this age proves that there are much older crustal materials under Mauritius that could only have originated from a continent.” Now some people think other pieces of the Gondwana supercontinent may be found in the future, as we explore deeper in the oceans . Via ScienceAlert and Phys.org Images via Ludovic Lubeigt on Flickr and Susan Webb/Wits University

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Scientists find evidence of lost continent beneath Mauritius

Beautiful glass inlays bring unexpected beauty to everyday objects

September 11, 2015 by  
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Corten Steel Mizoen Information Point Rises From the Rocks in the French Alps

June 25, 2013 by  
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Read the rest of Corten Steel Mizoen Information Point Rises From the Rocks in the French Alps Permalink | Add to del.icio.us | digg Post tags: Architecture , French Alps , herault arnod architectes , Mizoen Information Point , oxide , Prefab , rusty        

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As Extreme Weather Rocks Nation, GOP Blocks Climate Adaptation Efforts

June 7, 2011 by  
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Photo credit: thegreenj via Wikimedia /CC BY-SA Last year, natural disasters left 42 million people homeless — twice as many as in 2009.

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As Extreme Weather Rocks Nation, GOP Blocks Climate Adaptation Efforts

Stunning Time-Lapse Video Shows Landscapes of "Midnight Sun" Natural Phenomenon (Video)

June 7, 2011 by  
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Image via vimeo screengrab Norwegian photographer and filmmaker Terje Sørgjerd might be one of my very favorite artists. He’s got quite the reputation for producing phenomenal time-lapse videos, such as this one of the milky way

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Stunning Time-Lapse Video Shows Landscapes of "Midnight Sun" Natural Phenomenon (Video)

Rock Steady: The World’s 10 Most Amazing Balanced Stones

December 14, 2010 by  
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[ By Steve in 7 Wonders Series , Geography & Travel , History & Trivia . ] Earth may be one of the most geologically active planets in the solar system, but don’t tell that to these 10 brazenly oblivious balanced stones. Poised between inertial stability and the relentless force of gravity, these rock-steady rocks maintain a precarious balance between soil and sky

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