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Researchers have created an 18-carat gold nugget using plastic

Leonie van 't Hag, a postdoc in the ETH lab headed by Raffaele Mezzenga, Professor of Food and Soft Materials has created a new form of gold that weighs about five to ten times less than traditional 18-carat gold. The conventional mixture is usually three-quarters gold and one-quarter copper, with a density of about 15 g/cm3. Miraculous lightness of the metal was achieved by using protein fibres instead of using metal alloys. The researchers can even adjust the hardness of the material by changing the composition of the gold. They can also replace the latex in the matrix with other plastics, such as polypropylene. Src: https://bit.ly/2Tg907y

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African parrots exhibit high level of intelligence by sharing food in exchange of tokens

On the basis of African grey parrot, scientists from the Max Planck Institute for Ornithology showed that parrots exhibit a high level of social intelligence and cooperativeness. In the study, African grey parrots were kept inside a cage and were trained to transfer tokens in exchange for food and readily helped other parrots in the cage when received rewards and did not appear jealous. This shows that they have evolved a level of intelligence comparable to the great apes, crows, and dolphins. This is the first proof of instrumental helping in a non-mammalian species. Src: https://bit.ly/2TjKTF7

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Scientists and engineers plan hi-tech effort to count Whales from the space

The New England Aquarium, Boston and Draper, a firm based in Cambridge are finding new high-tech solutions in order to protect whales from extinction. They are using data from sources like satellites, sonar and radar to keep a closer eye on how many whales are in the ocean. John Irvine, chief scientist at Draper said, the task will be done by gathering data from sources ranging from European space agencies to amateur radio operators, in order to create a probability map of where in the ocean the whales might be. Src: https://bit.ly/2QsDoJT

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Global extent of river ice loss predicted due to temperature rise: Study

Researchers at the University of North Carolina at Chapel Hill Department of Geological Science, in a new study, have found that the duration of annual river ice cover will decrease by about six days for every one degree Celsius increase in global temperatures. Xiao Yang, a postdoctoral scholar stated that the team used more than 400,000 satellite images taken over 34 years to measure which rivers seasonally freeze over around the world and also detected a widespread decrease in monthly river ice coverage and the predicted pattern of future ice loss is likely to lead to economic challenges for people. Src: https://bit.ly/39ycDeE

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