Dmitry Epov / Alamy
Starting in 2005, Georg Steinhauser – then a chemist at the Vienna University of Technology – collected pieces of belly-button fluff from his navel and recorded their colour and weight. Over the next three years he collected 503 pieces of lint, weighing almost a gram in total.
Eventually, he sent some of his lint off for chemical analysis, and published his findings in a scientific journal. And all in the interests of answering the question: why do some people find so much fuzz in their belly buttons? The answer, it appears, depends on your clothing and how hairy your navel is.
Digory: A 3D Printed Alternative to Ivory
Published on April 17, 2021 by
For a long time, ivory was considered a valuable material due to its rarity and was used, among other things, for various art pieces. The material is obtained from the tusks and canines of various species, prominently Asian elephants. In order to protect these animals, the ivory trade has been banned since 1989. The EU Commission is also considering a ban on intra-European trade in antique ivory in order to counteract criminal activities. The Technical University in Vienna has now developed the material “Digory” together with Cubicure GmbH , which thanks to SLA 3D printing, enables the restoration of existing objects and is deceptively similar to ivory. The project was created in cooperation with the Art and Monument Preservation of the Archdiocese of Vienna and the Addison restoration studio in Vienna.
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Some 100 African elephants are killed each day by ivory-seeking poachers , but a new innovation may finally put a stop to the blood-soaked illegal trade.
Austrian scientists at Vienna University of Technology developed an alternative that is 3D printed and polished to create deceptively authentic-looking substitutes.
Called Digory, it consists of synthetic resin and calcium phosphate particles, which start as a hot liquid that are then hardened in the 3D printer to form the desired shape.
Researchers note that not only is Digory easier to work with, it can also be automatically shaped, saving hours craftsmen spend painstakingly crafting ivory substitutes.
As COP26 looms and tropical deforestation soars, REDD+ debate roars on
by on 15 April 2021
The United Nations REDD+ program (reduced emissions from deforestation and forest degradation) has been operating for more than 13 years as a multipurpose initiative, intended to curb deforestation in tropical nations, sequester forest carbon, combat climate change, protect biodiversity, and aid poor rural communities.
The REDD+ mechanism is largely paid for by wealthy industrialized countries contributing funds to less developed tropical nations, including those in the Amazon, Congo Basin and Indonesia.
Some 600 REDD+ projects have been initiated to date (with some 400 still active), mostly implemented by socioenvironmental NGOs or for-profit project developers, and financed by more than $10 billion in donor funds in more than 65 countries. But evidence of avoided deforestation and reduced carbon emissions is controversial.