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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, [...]

KEY POINTS Researchers investigated the impact of the common drugs on teeth The ones exposed to treatment had reduced enamel microhardness and mineral density The drugs "could be involved in the etiology tooth enamel defects," the researchers said Common anti-inflammatory drugs given to children may have an impact on their dental health, as they can affect kids' dental enamel. For their study, published in the journal Scientific Reports, researchers [...]

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 Brazil. For the study, [...]

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 [...]

Call it a shock discovery: DNA research has revealed two entirely new species of electric eel in the Amazon basin, including one capable of delivering a record-breaking jolt. The findings are evidence, researchers say, of the incredible diversity in the Amazon rainforest — much of it still unknown to science — and illustrate why it is so important to protect a habitat at risk from deforestation, logging and fires. “In spite of all human impact on the Amazon rainforest in the [...]

Researchers of a new study have found that cannabidiol, or CBD, a compound present in  marijuana, can reduce aggressiveness brought on by social isolation.  Isolation-induced aggressiveness is normally treated with antidepressant or antipsychotic drugs, but earlier studies suggest CBD may also work, so researchers from Brazil conducted an experiment to confirm this.  Francisco Silveira Guimarães, from the University of São Paulo's Ribeirão Preto [...]

Many of the teenagers across the globe think that skipping breakfast can help them to lose weight. But a study has proved that, in fact, the opposite could be correct. The research that published in the Scientific Reports on Monday stated that missing the first meal of a day is likely to increase the risk of obesity among adolescents. The study tried to find a link between unhealthy eating habits and weight gain. The research also stated that skipping breakfast can contribute to several [...]

In December 2015, a broken tooth — a lower premolar, to be precise — was found in fossilized form in the São Paulo state of Brazil, and after two-and-a-half years of analyses, researchers announced it belonged to the oldest known mammal species from the country. They named the species Brasilestes stardusti, as a tribute to musician David Bowie, who died a month after the tooth’s discovery. The fossil is only 3.5 millimeters (just over a tenth of an inch) in size, and the tooth’s roots [...]

Remember the two atomic bombs, designed by Los Alamos Laboratory, 'Little Boy' and 'Fat Man', which change the fate of two cities, Hiroshima and Nagasaki in 1945, during Second World War? Scientists from all around the world conducted detail studies on the radiation, which killed thousands of civilians, to understand the effects as well as to gain the insight into it. Even though scientists know that radiation exposure has harmful effects on humans, a Brazilian scientists group has achieved a [...]