POTIGUAR BASIN, Brazil — On the estuary beaches where the Atlantic Ocean mixes with freshwater rising from mangrove soils, the shorebird known as the red knot has a single goal: to feed. While one member of the flock keeps watch, the others use their specialized, tireless beaks to capture clams, oysters, snails and earthworms that inhabit the muddy soils. Soon the time to migrate will come, and the birds must double their weight to endure the long trip. Each May, after spending the previous eight months in the coastal wetlands of Brazil’s shoreline and in Argentina’s Tierra del Fuego, at the far south of South America, red knots (Calidris canutus) begin a long return flight to the Northern Hemisphere. Their final destination is the cold, desert-like Arctic tundra. It’s there, during the northern summer, between June and August, that they breed. Even before the journey starts, on the beaches of Macau, Guamaré and Galinhos — coastal municipalities dotted throughout Brazil’s Potiguar Basin — observers can see a sign of their preparation: the birds’ chests display a reddish color typical of nuptial plumage. Among migratory birds, the red knot is one of the longest-distance travelers. It flies for about six days and six nights without sleeping, eating or drinking. After leaving Brazil, it will cover roughly 8,000 kilometers (5,000 miles) to its next stop: Delaware Bay, on the northeastern coast of the U.S. From there, the journey continues toward the Arctic; over a year, the round trip may cover 30,000 km (nearly 19,000…This article was originally published on Mongabay

“One of the world’s largest pharmacies is being destroyed,” says Benki Piyãko, a leader of the Ashaninka Indigenous people in the Brazilian state of Acre. The warning points to multiple threats advancing on the Amazon but also to growing debate surrounding one of the so-called forest medicines: ayahuasca. This Indigenous beverage with psychedelic properties is usually prepared from two native plants: the caapi vine or mariri (Banisteriopsis caapi) and the leaves of the chacrona plant (Psychotria viridis). According to Indigenous leaders and experts, these species are facing increasing pressure and signs of scarcity in some areas. Called kamarãpe by the Ashaninka people, ayahuasca has been used by Indigenous peoples across the Amazon for centuries. It has crossed borders for decades, ceasing to circulate exclusively in its original contexts. Today, it can be found in urban religious centers, therapeutic retreats, and international psychedelic tourism circuits. Scientists and pharmaceutical companies are also turning their attention to this ancestral beverage, which already shows evidence of therapeutic potential for different mental health disorders such as depression and substance addiction. But increasing global interest is also creating concerns. As demand grows, so has the ayahuasca supply chain, without a corresponding growth in management or oversight. In different parts of the Amazon, there are signs of pressure on the species used to prepare the beverage, often collected without planning. At the same time, increasing consumption in nontraditional contexts raises concerns about ancestral knowledge being commodified for the market. The main problem seems to lie in how…This article was originally published on Mongabay