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Some people infected with SARS-CoV-2 may be able to transmit the virus for longer than the recommended quarantine period, without necessarily manifesting any symptoms during the final stage of the infection, a study suggests. The research, published recently in the journal Frontiers in Medicine, involved 38 Brazilian patients who were followed on a weekly basis between April and November 2020. The researchers affiliated with the Pasteur-USP Scientific Platform, a partnership between [...]

Since the first COVID-19 case was reported in December last year, the viral infection spread across the globe, infecting more than 18 million people. At the earliest stage of the pandemic, the symptoms mostly indicated that the virus causes respiratory illnesses, but soon experts noticed several other symptoms such as delirium, diarrhoea, loss of taste and smell and even rashes on the skin in patients suffering from COVID-19. This ability of the virus to cause secondary infections in the body [...]

Two new electric eel species have been identified in the Amazon basin, including one fish with a record-breaking shock, scientists say. Researchers had previously identified only one species of electric eel in more than 250 years of studying the creatures that lurk in South American waters and stun their prey with electric discharges. However, the new genetic and ecological analysis, published Tuesday in the peer-reviewed Nature Communications, identifies a total of three unique [...]

Lithium-air batteries, which run on ambient oxygen, may be a sustainable and environment-friendly way to store energy and power electric vehicles, houses, and industries of the future, scientists say.  Current lithium ion battery technology will probably not be able to handle the coming decades' huge demand for energy. It is estimated that by 2050, electricity will make up 50 per cent of the world's energy mix.  Today, that rate is 18 per cent. However, installed capacity for renewable [...]

Brazilian scientists have identified four new families of extremely young asteroids, taking the total number to 13. The four families, all of which are less than seven million years old, orbit between Mars and Jupiter as part of a grouping known as the Main Asteroid Belt. The researchers dated the families using a numerical simulation method to process current data to go back in time to the asteroid formation era. "We identified the new families by means of numerical simulation using the [...]

Shephard Hill, President of Boeing International, attends a media conference in Sao Paulo October 26, 2011. Boeing, Brazil's Embraer and the Sao Paulo State Research Foundation (FAPESP) today announced plans to collaborate on long-term aviation biofuels-related research and development, a move that represents another major step toward the creation of a sustainable aviation biofuels industry in Brazil.