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The company Nanox, with the support of the FAPESP programme “Innovative Research in Small Enterprises” (PIPE) in Brazil, has developed a fabric with silver microparticles on its surface capable of inactivating the SARS-CoV-2 virus in laboratory tests, where this material eliminated 99.9% of the virus after two minutes of contact. The material has been developed by researchers from the Institute of Biomedical Sciences of the University of São Paulo (ICB-USP), the Laboratory [...]

A paper recently published in Nature Communications is the first to show a connection between demand from certain developed countries for agricultural commodities and the growing risk of malaria in the countries that supply those goods. The study was conducted by scientists affiliated with the School of Public Health of the University of São Paulo (FSP-USP) in Brazil and colleagues at the University of Sydney in Australia. According to the article, approximately 20% of the malaria risk [...]

Simultaneous dengue and COVID-19 epidemics could lead to the collapse of Brazil’s health system, scientists warn. The same could occur in other Latin America countries where about 500 million people are at risk of contracting dengue, according to the Pan American Health Organization (PAHO). For many of these countries, combatting the two outbreaks is an unprecedented health challenge. Brazil is “on the eve of reaching the peak of COVID-19”, biologist Camila Lorenz, a [...]

Researchers in Brazil are using minimally invasive autopsy techniques in suspected coronavirus deaths in an effort to protect health workers from infection. Pathologists performing autopsies are exposed to potentially infectious organs, fluids and secretions. For six years, researchers at the Hospital das Clínicas at the University São Paulo School of Medicine have been developing the autopsy technique, which includes the use of protective equipment similar to that used by [...]

Extreme rainfall has become increasingly common in metropolitan São Paulo, Brazil. The capital of the state of São Paulo is the largest city in the southern hemisphere. The metropolitan area suffered from flooding due to heavy rain in February. Early in the month, no less than 114 millimeters (mm) fell in a single 24-hour period. This was the second highest 24-hour amount for the month since 1943, according to Brazil’s National Meteorological Institute (INMET). According to [...]

The hypothesis that the Solar System was born from a gigantic cloud of gas and dust was first floated in the second half of the eighteenth century. It was proposed by German philosopher Immanuel Kant and developed by French mathematician Pierre-Simon de Laplace. It is now a consensus among astronomers. Thanks to the enormous amount of observational data, theoretical input and computational resources now available, it has been continually refined, but this is not a linear process. Nor is it [...]

The promises of regional economic development pinned to the building of the Belo Monte hydroelectric complex, in northern Brazil, have failed to materialise. Instead, the population of Altamira —the mega-dam’s nearest town — grew, while nearby rural areas suffered. These were the conclusions reached in a study published in the journal Land Use Policy, which analysed the social and environmental impacts of the hydroelectric project — one of the biggest infrastructure [...]

Crotoxin, extracted from the venom of the South American rattlesnake Crotalus durissus terrificus, has been studied for almost a century for its analgesic, anti-inflammatory and antitumor activities and as an even more powerful muscle paralyzer than botulinum toxin. However, the toxicity of crotoxin limits its medicinal use. A new study, published by Brazilian researchers in the journal Toxins, shows that crotoxin’s therapeutic effects can be enhanced and its toxicity reduced when it is [...]

Billions of years ago, asteroid collisions resulted in the ejection of fragments hundreds of kilometers across and sharing similar orbits. The resulting groups are known as asteroid families. Other asteroid groups formed as a result of rotational fission, which happens when a rapidly spinning body reaches critical rotation speed and splits into relatively small fragments only a few kilometers across. Scientists have always thought about fission clusters as entirely distinct from collisional [...]