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A new study in Brazil found microplastics in the brain tissue of cadavers, pointing to the olfactory bulb as a point of entry. Dr. Natalie Azar explains how microplastics can enter the body and what it means for human health. Sept. 17, 2024

The tiny scraps of plastic were found in the olfactory bulb, the part of the brain responsible for processing smell.   Scientists in Brazil found microplastics in the brain tissue of cadavers, according to a new study published Monday in the journal JAMA Network Open Mounting research over the last few years has found microplastics in nearly every organ in the body, as well as in the bloodstream and in plaque that clogs arteries . Whether these ubiquitous pollutants can reach the [...]

Wildfires, deforestation and global warming could permanently destroy the water cycle that sustains parts of the Amazon rainforest if action is not taken in the coming decades, according to a study published Wednesday in the journal Nature. The study suggests that 10% to 47% of the landscape is at risk of transitioning away from rainforest by 2050 if warming and rates of deforestation aren't dramatically curbed. “So many stressors are intensifying — climatic ones and land [...]

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 [...]