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Em 2023: 1 notícias
Desde 1995: 6 notícias
Scientists make ‘disturbing’ find on remote island: plastic rocks
Publicado em 21 março 2023
There are few places on Earth as isolated as Trindade island, a volcanic outcrop a three- to four-day boat trip off the coast of Brazil.
So geologist Fernanda Avelar Santos was startled to find an unsettling sign of human impact on the otherwise untouched landscape: rocks formed from the glut of plastic pollution floating in the ocean.
Santos first found the plastic rocks in 2019, when she traveled to the island to research her doctoral thesis on a completely different topic — [...]
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Cuba’s vaunted health system straining under Covid cases
Publicado em 02 setembro 2021Cuba’s vaunted public health system, which boasts more doctors per capita than any other country, has been pushed to the brink in recent months by the arrival of the coronavirus Delta variant. n a country long left relatively unscathed by the global pandemic, doctors are now battling to get their hands on oxygen and drugs, and patients can wait up to 24 hours for a hospital bed. Despite having rolled out its own, home-grown Covid-19 vaccines — Latin America’s first — [...]ver notícia -
Coronavirus variant first detected in Brazil more contagious: study
Publicado em 02 março 2021The coronavirus variant detected in the northern Brazilian state of Amazonas is twice as contagious and capable of re-infecting those who already had COVID-19, according to a scientific study released on Tuesday. The Sao Paulo Research Foundation said the scientific research group was coordinated by Ester Sabino, an expert on infectious diseases at the University of Sao Paulo, and Nuno Faria, a researcher at Oxford University in Britain. The virus variant was initially detected in [...]ver notícia -
Coronavirus can infect brain tissue, affect memory, language: Brazilian study
Publicado em 16 outubro 2020SARS-CoV-2, the virus that causes COVID-19, is capable of infecting brain tissue and affecting the structure of the cortex, a region of the brain responsible for functions such as memory, consciousness, and language, according to a Brazilian study released on Thursday. “We demonstrated for the first time that the SARS-CoV-2 virus infects and replicates in astrocytes and this can decrease the viability of neurons,” said Daniel Martins de Souza, a professor at the Institute of [...]ver notícia -
Amazon city of Manaus may have reached ‘herd immunity’: study
Publicado em 23 setembro 2020The 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 percent 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 sufficiently [...]ver notícia -
A shocking find : new high-voltage electric eels revealed
Publicado em 10 setembro 2019Call it a shock discovery: DNA research has revealed two entirely new species of electric eel in the Amazon basin, including one capable of delivering a record-breaking jolt. The findings are evidence, researchers say, of the incredible diversity in the Amazon rainforest — much of it still unknown to science — and illustrate why it is so important to protect a habitat at risk from deforestation, logging and fires. “In spite of all human impact on the Amazon rainforest in the [...]ver notícia