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The geology of Brazil’s volcanic Trindade Island has fascinated scientists for years, but the discovery of rocks made from plastic debris in this remote turtle refuge is sparking alarm. Melted plastic has become intertwined with rocks on the island, located 1,140 km (708 miles) from the southeastern state of Espirito Santo, which researchers say is evidence of humans’ growing influence over the earth’s geological cycles. “This is new and terrifying at the same time, [...]

The group solicited responses to a fastidiously graded spectrum of feelings beginning with robust facial expressions categorised as 100 per cent depth and morphing by 10 per cent increments from excessive pleasure or unhappiness, for instance, to impartial. Each participant was requested to say whether or not the face expressed happiness, unhappiness, anger, disgust or worry. “We arrived at the lowest intensity of expression needed for a person to start judging correctly the emotion it [...]

A study shows how SARS-COV-2 infects brain cells called astrocytes, causing structural changes in the brain. Infection with SARS-CoV-2 can cause brain alterations and neurocognitive dysfunction, particularly in long COVID-19 syndrome, but the underlying mechanisms are elusive. Daniel Martins-de-Souza and colleagues used MRI to compare brain structure in 81 study participants recovering from a mild COVID-19 infection and 81 healthy individuals. The authors found that the former group [...]

कोरोना के लिए मौजूदा क्वारंटाइन समय नाकाफी! 200 दिनों के बाद भी इंसान हो सकता है संक्रमित, स्टडी में खुलासा Coronavirus Quarantine Period: यह अध्ययन कोविड-19 रिपोर्ट पॉजिटिव आने के बाद मरीजों के लिए क्वारंटाइन [...]

Is herd immunity during a global pandemic possible? 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 [...]

Rio de Janeiro, Feb 19 | In addition to keeping the mouth moist and protecting us against germs, saliva can also be used for early detection of the risk of developing diseases associated with surplus body fat, a new study suggests. For the findings, published in the journal Nutrition Research, the researchers in Brazil performed a study in which they used the level of uric acid in saliva to predict body fat percentages in teenagers and identify those with surplus fat even if they had no [...]

Researchers have identified for the first time the mechanism by which chronic stress causes hair colour loss, an advance that may lead to the development of novel drugs which can prevent hair from graying. In the study, published in the journal Nature, scientists induced intense pain in special black mice for several weeks using a substance called resiniferatoxin, and turned the animals' fur completely white. "For the longest time it's been said that stress makes the hair turn [...]

Rio de Janeiro, Nov 13 (IANS) Stress while driving is a risk factor for the development of cardiovascular disease and sudden cardiac complications such as heart attack, but now researchers have found that listening to music while driving can reduce cardiac stress. “We found that cardiac stress in the participants in our experiment was reduced by listening to music while they were driving,” said study lead author Vitor Engracia Valenti, Professor at Sao Paulo State University in [...]

What was once known as a single species of electric eel is actually three different species, with one of the newly classified organism producing the highest voltage discharge of any known animal, according to a study. The research, published in the journal Nature Communications, offers new insights into the origin and production of strong electric discharges in fishes. Electric eels belong to the knifefish family, and are closely related to catfish and carp than to other eel families, the [...]