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Up to half of the Amazon rain forest could transform into grasslands or weakened ecosystems in the coming decades, a new study found, as climate change, deforestation and severe droughts like the one the region is currently experiencing damage huge areas beyond their ability to recover. Those stresses in the most vulnerable parts of the rain forest could eventually drive the entire forest ecosystem, home to a tenth of the planet's land species, into acute water stress and past a tipping [...]

Brazil is experiencing an enormous outbreak of dengue fever, the sometimes fatal mosquito-borne disease, and public health experts say it is a harbinger of a coming surge in cases in the Americas, including Puerto Rico. Brazil’s Health Ministry warns that it expects more than 4.2 million cases this year, outstripping the 4.1 million cases the Pan-American Health Organization recorded for all 42 countries in the region last year. Brazil was due for a bad dengue year — numbers [...]

(Reuters) – Brazilian space research center INPE said on Wednesday that carbon emissions in the Amazon forest soared in 2019 and 2020 compared to the previous decade due to poor enforcement of environmental protection policies. The forest’s carbon emissions amounted to 0.44 billion metric tons in 2019 and 0.52 billion metric tons in 2020, compared to an annual average of 0.24 billion metric tons from 2010-2018, according to the INPE study published in Nature magazine. The [...]

Brazilian researchers captured on camera the moment when lightning rods on buildings released an upward discharge to attract incoming lightning. Benjamin Franklin invented lightning rods in the 18th century, and the devices have been protecting buildings and people from the destructive forces of lightning ever since. But the details of how lightning rods function are still the subject of scientific research. Although modern lightning protection systems involve extra equipment that makes [...]

A small icy world far beyond Neptune possesses a ring like the ones around Saturn. Perplexingly, the ring is at a distance where simple gravitational calculations suggest there should be none. “That’s very strange,” said Bruno Morgado, a professor at the Federal University of Rio de Janeiro in Brazil. Dr. Morgado is the lead author of a paper published in the journal Nature on Wednesday that describes the ring that encircles Quaoar, a planetary body about 700 miles in [...]

Two new colorful species of fish have been found in Brazil's Amazon Basin -- and they are already at risk of disappearing due to extinction. The fish belong to a subfamily called South American darters. The discovery brings the known number of darter species to five. One species, Poecilocharax callipterus, is distinguished by its long, striking red-orange fins and a dark spot at the base of its tail. The other new species, Poecilocharax rhizophilus is the most miniature [...]

Prepare yourself for a shock of the record-breaking variety – scientists have identified two new electric eel species, and one of them can put out a zap that’s stronger than any other animal we know about. The supercharged species is Electrophorus voltai, and it can discharge 860 V of electricity in a single shock, some way ahead of the 650 V shock that electric eels are normally associated with. It’s definitely enough to cause a human-sized creature some serious [...]

Prepare yourself for a shock of the record-breaking variety – scientists have identified two new electric eel species, and one of them can put out a zap that’s stronger than any other animal we know about. The supercharged species is Electrophorus voltai, and it can discharge 860 V of electricity in a single shock, some way ahead of the 650 V shock that electric eels are normally associated with. It’s definitely enough to cause a human-sized creature some serious [...]