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Technique developed at Human Genome and Stem Cell Research Center, funded by FAPESP and hosted by the University of São Paulo, produced hepatic tissue in the laboratory in only 90 days and could become an alternative to organ transplantation in future. Credit: Daniel Antonio/Agência FAPESP Using human blood cells, Brazilian researchers have obtained hepatic organoids (“mini-livers”) that perform all of the liver’s typical functions, such as producing vital [...]

A nonlethal dose of insecticide clothianidin can reduce honeybees’ life span by half; once combined with the fungicide pyraclostrobin, it alters the behavior of worker bees to the point of endangering the whole colony. Credit: Pixabay A new study by Brazilian biologists suggests that the effect of pesticides on bees could be worse than previously thought. Even when used at a level considered nonlethal, an insecticide curtailed the lives of bees by up to 50 percent. The researchers also [...]

On Aug. 6, 1945, the United States dropped an atomic bomb nicknamed “Little Boy” on Hiroshima, Japan, leading to a nuclear blast that instantly claimed about 45,000 lives. Now, the jawbone of one of those casualties — belonging to a person who was less than a mile from the bomb’s hypocenter — is helping researchers determine how much radiation was absorbed by the bones of the victims, a new study finds. The amount is staggering: Analyses show that the jawbone’s radiation dose was [...]