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Em 2023: 2 notícias
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Video: Brazilian researchers find 'terrifying' plastic rocks on remote island
Publicado em 16 março 2023
Trindade Island, Brazil: The geology of Brazil's volcanic Trindade Island has fascinated scientists for years, but the discovery of rocks made from plastic debris in this remote turtle refuge is sparking alarm.
Melted plastic has become intertwined with rocks on the island, located 1,140 km from the southeastern state of Espirito Santo, which researchers say is evidence of humans' growing influence over the earth's geological cycles.
Santos and her team ran chemical tests to [...]
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Astronomers astonished by ring around frigid distant world Quaoar
Publicado em 09 fevereiro 2023The small distant world called Quaoar, named after a god of creation in Native American mythology, is producing some surprises for astronomers as it orbits beyond Pluto in the frigid outer reaches of our solar system. Researchers said on Wednesday they have detected a ring encircling Quaoar akin to the one around the planet Saturn. But the one around Quaoar defies the current understanding of where such rings can form – located much further away from it than current scientific [...]ver notícia -
COVID-19: Has Brazilian city of Manaus reached 'herd immunity'?
Publicado em 23 setembro 2020Sao Paulo: The Brazilian city of Manaus, which was devastated by the coronavirus pandemic, may have suffered so many infections that its population now benefits from “herd immunity,” according to a preliminary study. Published on the website medRxiv, the study analyzed infection data with mathematical modeling to estimate that 66 per cent of the population had antibodies to the new coronavirus in Manaus, where the pandemic’s passage was as fast as it was brutal. That may be [...]ver notícia