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Scientists were baffled when a band of seaweed longer than the entire Brazilian coastline sprouted in 2011 in the tropical Atlantic - an area typically lacking nutrients that would feed such growth. A group of U.S. researchers has fingered a prime suspect: human sewage and agricultural runoff carried by rivers to the ocean. Coronavirus can transform pancreas cell function; certain genes may protect an infected person's spouse The following is a summary of some recent studies on COVID-19. [...]

SAO 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 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 [...]

Researchers Butantan Institute succeeded in reducing the toxicity and potentiating the analgesic effect of crotoxin by encapsulating it in nanostructured silica — the results of tests in an animal model of neuropathic pain are promising. 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 [...]

LONDON (AP) — Smoking high-potency marijuana every day could increase the chances of developing psychosis by nearly five times, according to the biggest-ever study to examine the impact of pot on psychotic disorder rates. The research adds to previous studies that have found links between marijuana and mental health problems, but still does not definitively pinpoint marijuana as the cause. Psychotic disorders — in which people lose touch with reality — are typically triggered by factors [...]