Paraguay’s capital still without a wastewater treatment plant, Mexico City’s warmer winters and Latin America’s smartest cities.

PARAGUAY The Paraguay river–which flows through and supplies water to four Latin American countries and is a major commercial waterway–is polluted by millions of liters of wastewater every hour, reports EFE. Paraguay’s capital alone spews 3.2 million liters of untreated residential and commercial sewage each hour, admits Osmar Sarubbi, president of Paraguay’s sanitation services company … Continue reading Paraguay’s capital still without a wastewater treatment plant, Mexico City’s warmer winters and Latin America’s smartest cities.

Fighting dengue in Paraguay, climate change in the Brazilian Amazon, and ancient microorganisms in Antarctica.

ANTARCTICA

A team of scientists has determined that a major cause of melting corresponds to the bottom of submerging ice shelves.

Climate change could raise the temperature in the Brazilian Amazon by six degrees and convert 45% of rain forest areas into savannah. Credit: WikiCommons.

Researchers drilling to the bottom of Lake Hodgson of Antarctica have found microorganisms that date back 100,000 years. DNA studies will soon determine whether these findings are an unknown species.

ARGENTINA

A University of Mendoza study has demonstrated the neuroprotective effects of progesterone and their possible application as treatment for Parkinson’s disease. This research was commended by the Society of Biology of the Cuyo.

A team of researchers from the Universidad Nacional del Litoral has isolated bacteria from infant feces and breast milk for use in probiotics. The team’s intention is to grow up these microorganisms to commercial quantities so they can be incorporated into the daily glass of milk in low-income schools.

Continue reading “Fighting dengue in Paraguay, climate change in the Brazilian Amazon, and ancient microorganisms in Antarctica.”

Giant African land snails are invading Latin America

by Ali Hendren

In 1988 at an agribusiness expo in Curitiba in southern Brazil, giant African land snails (Achatina fulica) were heralded as a promising new food source to replace smaller escargot snails. The introduction at the fair was so widely advertised and aggressively marketed that commercial breeders, cooperatives and even private homeowners began rearing the snails–endemic to eastern Africa–immediately with kits sold at the expo.

“The snails were supposed to represent social and economic progress for Brazil,” says Roberto Vogler, an Argentine scientist who studies the snails along the border his country shares with Brazil. “They were going to position the country as the world’s leading supplier of escargot.”

But a booming escargot market in Brazil never materialized. Many of the smaller producers had neither the means to properly process the meat nor the public demand to drive a now flooded market. Frustrated with their failed investment, operations were abandoned and snails were released into the wild in overwhelming numbers.

Today, the infestation has spread throughout Latin America–and not at a snail’s pace. They’ve invaded 24 of Brazil’s 26 states, spread through Venezuela and Colombia and have breached the borders of Paraguay, Argentina, Ecuador and Peru–posing both an agricultural and a public health threat. The snails are sweeping the continent carrying parasites and an appetite for most any crop.

The snails’ pace

On paper, the introduction of A. fulica for escargot farming in Brazil appeared promising. The snails are larger Continue reading “Giant African land snails are invading Latin America”

Mining sparks deadly battles over water supplies in Peru, 2,000 year old mummies discovered in Chile, and heavy rains take a toll in Bolivia.

BOLIVIA Heavy rains have affected more than 9,600 families in Bolivia, says the country’s minister of defense. Flooding, landslides and lightning storms have caused the deaths of 18 people in Bolivia. CHILE A Chilean town in the Atacama desert has uncovered several mummies from both its graveyards, some 2,000 years old. The municipal museum of … Continue reading Mining sparks deadly battles over water supplies in Peru, 2,000 year old mummies discovered in Chile, and heavy rains take a toll in Bolivia.

Thursday January 17

Global demand for quinoa triples its price in Bolivia, Paraguay struggles to contain spread of dengue, and the superears of a Colombian grasshopper. BOLIVIA Global demand for quinoa has tripled the price of the Andean grain, forcing Bolivian and Peruvian farmers to rely on other staples for food. “It’s worth more to [the producers] to … Continue reading Thursday January 17

Thursday November 15

Poisoning rats in the Galapagos Islands, looking for natural antibiotics in Patagonian frogs and dengue fever in Peru. ARGENTINA Scientists in Patagonia are looking at the compounds frogs and toads secrete for antifungal, antibacterial and antiviral properties. With the mounting antibiotic arms race against drug-resistant ‘super’ bacteria, scientists are looking for natural sources of antimicrobials … Continue reading Thursday November 15

Thursday October 25

Scientists study monarch butterflies in Mexico, Brazil has lost 80% of its northern coral reefs, and study finds cholera in Haiti came from Nepal. ARGENTINA Yesterday’s TEDxRiodelaPlata conference in Buenos Aires highlighted the work of several scientists, physicians, and engineers from Argentina and around the world. One highlight: Miguel San Martin, an Argentine aeronautical engineer … Continue reading Thursday October 25

Thursday August 9

Colombia prepares for drought from El Niño, the U.S. and Mexico sign a border environmental agreement, and Brazil teams up with China on agricultural research. BRAZIL China has opened a virtual laboratory in Brazil that will focus on molecular biology and genetics in agricultural research. Chinese researchers visiting Brazil will be facilitated by infrastructure already … Continue reading Thursday August 9