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Em 2024: 3 notícias
Desde 1995: 8 notícias
Deforestation harms climate less than other types of Amazon degradation, study finds
Publicado em 05 agosto 2024
SAO PAULO, Aug 5 (Reuters) - Brazil's President Luiz Inacio Lula da Silva came into office in 2023 pledging to tackle deforestation in the Amazon and restore his country as a climate leader after years of intense destruction in the world's largest rainforest under predecessor Jair Bolsonaro.
Lula's commitment to end deforestation by 2030 is on track with tighter enforcement helping to cut deforestation rates by more than half, according to government figures. But a new study [...]
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Genome study reveals prehistoric Ethiopian origins of coffee
Publicado em 16 abril 2024Researchers now have unlocked the genome of the Arabica species and traced its origins to a natural mating between two other coffee species an estimated 610,000 to one million years ago in the forests of Ethiopia. That makes this species older than our own species Homo sapiens, which arose in Africa about 300,000 years ago. The researchers sequenced the genomes of 39 Arabica varieties, including a specimen from the 18th century, to create the highest quality genome to date of this species, [...]ver notícia -
Global warming, deforestation, fires combined could hasten Amazon demise, study finds
Publicado em 14 fevereiro 2024BOGOTA, Feb 14 (Reuters) - Drought and heat driven by climate change and other factors threaten to cause the collapse of South America's lush Amazon rainforest system, scientists said on Wednesday in a study that found that nearly half of it could be pushed to a tipping point by 2050. "The region is increasingly exposed to unprecedented stress from warming temperatures, extreme droughts, deforestation and fires, even in central and remote parts of the system," the researchers [...]ver notícia -
Amazon forest carbon emissions skyrocketed under Bolsonaro, study shows
Publicado em 23 agosto 2023(Reuters) – Brazilian space research center INPE said on Wednesday that carbon emissions in the Amazon forest soared in 2019 and 2020 compared to the previous decade due to poor enforcement of environmental protection policies. The forest’s carbon emissions amounted to 0.44 billion metric tons in 2019 and 0.52 billion metric tons in 2020, compared to an annual average of 0.24 billion metric tons from 2010-2018, according to the INPE study published in Nature magazine. The [...]ver notícia -
Brazilian researchers find ‘terrifying’ plastic rocks on remote island
Publicado emTRINDADE ISLAND, Brazil (Reuters) – 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 (708 miles) from the southeastern state of Espirito Santo, which researchers say is evidence of humans’ growing influence over the earth’s geological [...]ver notícia -
Astronomers astonished by ring around frigid distant world Quaoar
Publicado em 08 fevereiro 2023WASHINGTON, Feb 8 (Reuters) - The 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 [...]ver notícia -
Coronavirus can transform pancreas cell function; certain genes may protect an infected person’s spouse
Publicado em 29 setembro 2021(Reuters) – The following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that have yet to be certified by peer review. Coronavirus transforms pancreas cell function When the coronavirus infects cells, it not only impairs their activity but can also change their function, new findings suggest. For example, when insulin-producing beta cells in the pancreas become infected with the virus, they not only [...]ver notícia -
An average of 15% of Brazilians have COVID-19 antibodies, study finds
Publicado em 26 maio 2021An average of 15% of Brazil’s 210 million people have COVID-19 antibodies, researchers announced on Wednesday. The study, backed by the Sao Paulo state government’s research foundation (FAPESP) and Federal University of Sao Paulo (Unifesp), was conducted up to the end of April when contagion was on the rise. Researchers found that the level of antibodies varied greatly across the country. For example, in the northeastern state of Ceara, 9.89% of people had antibodies, compared [...]ver notícia