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Common blood-pressure drugs may improve survival for patients with colorectal cancer, a new study suggests. After reviewing outcomes of almost 14,000 patients with colorectal cancer, researchers determined that ACE inhibitors, beta-blockers and thiazide diuretics were all associated with decreased mortality. They also found that patients who took their blood-pressure drugs consistently were less likely to die from their cancer. The researchers emphasize that more research is needed to [...]

Giant anteaters living in less forested habitats make use of larger home ranges, according to a study by Aline Giroux at the Federal University of Mato Grosso do Sul and colleagues, publishing August 18 in the open-access journal PLOS ONE. This behavior may allow them to incorporate forest patches into their territory, the authors say. Giant anteaters (Myrmecophaga tridactyla) are found across Central and South America in savannah habitats made up of a mosaic of forests, grasslands, and [...]

A team of scientists has discovered a new marmoset species in the Brazilian Amazon. Schneider's marmoset (Mico schneideri), described in the latest issue of the journal Scientific Reports, is named after professor Horacio Schneider, a pioneer and major contributor to the research of diversity and evolution of monkeys. The discovery was made by a team of researchers led by Rodrigo Costa Araújo, currently an associate researcher at Museu Paraense Emílio Goeldi. [...]

Newborn infants and babies aged up to three months should be stimulated to manipulate objects and observe adults performing everyday tasks. This incentive helps their social, motor and cognitive development, researchers note in an article published in the May 2021 issue of the journal Infant Behavior & Development. According to the authors, from the earliest age babies watch adults carrying out activities such as handling utensils and putting them away in drawers or closets. They should [...]

A low-cost, rapid diagnostic test for COVID-19 developed by Penn Medicine provides COVID-19 results within four minutes with 90 percent accuracy. A paper published this week in Matter details the fast and inexpensive diagnostic test, called RAPID 1.0 (Real-time Accurate Portable Impedimetric Detection prototype 1.0). Compared to existing methods for COVID-19 detection, RAPID is inexpensive and highly scalable, allowing the production of millions of units per week. Despite the urgency of the [...]

Diversity in diet plays a role in the complexity of venom in pit vipers such as rattlesnakes, copperheads and cottonmouths. But new collaborative research by Clemson University scientists found the number of prey species a snake ate did not drive venom complexity. Rather, it was how far apart the prey species were from each other evolutionarily. "It's not just diet that drives the variation in venom across snakes. It's the breadth of diet," said Christopher Parkinson, a [...]

Scientists also find two new, nearly 2-million-year-old specimens--likely the earliest pieces of the H. erectus skeleton yet discovered Date: American Museum of Natural History Summary: A new study verifies the age and origin of one of the oldest specimens of Homo erectus -- a very successful early human who roamed the world for nearly 2 million years. In doing so, the researchers also found two new specimens at the site -- likely the earliest pieces of the Homo erectus skeleton yet [...]

A Brazilian study published (http://www.nature.com/articles/s41467-020-20217-w) in Nature Communications shows that human activities have directly or indirectly caused biodiversity and biomass losses in over 80% of the remaining Atlantic Rainforest fragments. According to the authors, in terms of carbon storage, the biomass erosion corresponds to the destruction of 70,000 square kilometers (km²) of forest – almost 10 million soccer pitches – or USD 2.3 billion-USD 2.6 billion [...]

Novel study used brain organoids genetically modified to mimic now-extinct Neanderthals Date: February 11, 2021 Source: University of California - San Diego Summary: Researchers discovered a single gene alteration that may help explain cognitive differences between modern humans and our predecessor, and used that information to develop Neanderthal-like brain organoids in the lab. As a professor of pediatrics and cellular and molecular medicine at University of California San Diego [...]