South America

2024 Disasters in Numbers

In 2024, the Emergency Events Database (EM-DAT) recorded 393 natural hazard-related disasters. These events caused 16,753 fatalities and affected 167.2 million people. Economic losses totaled US$241.95 billion. The year 2024 was marked by extreme temperature events in Asia that caused thousands of deaths, severe droughts in Africa affecting over 25 …

Interconnected microbiomes and resistomes in low-income human habitats

An analysis of bacterial community structure and antibiotic resistance gene content of interconnected human faecal and environmental samples from two low-income communities in Latin America was carried out using a combination of functional metagenomics, 16S sequencing and shotgun sequencing; resistomes across habitats are generally structured along ecological gradients, but key …

Positive IgM for Zika virus in the cerebrospinal fluid of 30 neonates with microcephaly in Brazil

The epidemic of microcephaly in Brazil has been declared a Public Health Emergency of International Concern by WHO.1 The declaration states that a causal relationship between Zika virus infection during pregnancy and microcephaly is strongly suspected, although not yet scientifically proven.1 The hesitancy to accept causation in the presence of …

Workers face 'epidemic of heat-related injuries' due to climate change

Workers in fields and factories face an epidemic of heat-related injuries that will devastate their health, income and productivity as climate change takes hold, a major UN report has warned. Productivity losses alone could rise above $2tn by 2030, as outdoor employees in many regions slow their pace, take longer …

Zika virus and health systems in Brazil: From unknown to a menace

The unfolding story of Zika virus in the Americas is much more than a mosquito-borne disease that may affect fetal development. It is the story of a disease that exposed problems and raised challenges that the affected health systems and governments cannot ignore. Next, based largely on lessons provided by …

Differential climate impacts for policy-relevant limits to global warming: the case of 1.5 ◦C and 2 ◦C

Robust appraisals of climate impacts at different levels of global-mean temperature increase are vital to guide assessments of dangerous anthropogenic interference with the climate system. The 2015 Paris Agreement includes a two-headed temperature goal: “holding the increase in the global average temperature to well below 2 ◦C above pre-industrial levels …

Differential climate impacts for policy-relevant limits to global warming: the case of 1.5 °C and 2 °C

Robust appraisals of climate impacts at different levels of global-mean temperature increase are vital to guide assessments of dangerous anthropogenic interference with the climate system. The 2015 Paris Agreement includes a two-headed temperature goal: "holding the increase in the global average temperature to well below 2 °C above pre-industrial levels …

First Chikungunya outbreak in Suriname - Clinical and epidemiological features

In June 2014, Suriname faced the first Chikungunya outbreak. Since international reports mostly focus on hospitalized patients, the least affected group, a study was conducted to describe clinical characteristics of mainly outpatients including children. In addition, the cumulative incidence of this first epidemic was investigated. Original Source

Agriculture in the new climate action plans of Latin America (Intended Nationally Determined Contributions)

During recent years, agriculture has played a much more prominent role in the climate negotiations. In the Paris Agreement, the importance of addressing climate change to ensure food security and reduce the vulnerability of food production systems was stated more clearly than ever before. The level of commitment and priorities …

Zika virus in the Americas: Early epidemiological and genetic findings

Brazil has experienced an unprecedented epidemic of Zika virus (ZIKV), with ~30,000 cases reported to date. ZIKV was first detected in Brazil in May 2015 and cases of microcephaly potentially associated with ZIKV infection were identified in November 2015. Using next generation sequencing we generated seven Brazilian ZIKV genomes, sampled …

More Than 200 Million Latin Americans Living in Poverty

SANTIAGO – Some 225 million Latin Americans live below the poverty line, according to a report released Tuesday by the UN Economic Commission for Latin America and the Caribbean, or ECLAC. The publication of ECLAC’s 2015 Social Outlook report was accompanied by a call on governments “to protect social advances …

Detection and sequencing of Zika virus from amniotic fluid of fetuses with microcephaly in Brazil: a case study

The incidence of microcephaly in Brazil in 2015 was 20 times higher than in previous years. Congenital microcephaly is associated with genetic factors and several causative agents. Epidemiological data suggest that microcephaly cases in Brazil might be associated with the introduction of Zika virus. We aimed to detect and sequence …

Sensitivity of global terrestrial ecosystems to climate variability

The identification of properties that contribute to the persistence and resilience of ecosystems despite climate change constitutes a research priority of global relevance. Here the researchers present a novel, empirical approach to assess the relative sensitivity of ecosystems to climate variability, one property of resilience that builds on theoretical modelling …

Integrated crop water management might sustainably halve the global food gap

As planetary boundaries are rapidly being approached, humanity has little room for additional expansion and conventional intensification of agriculture, while a growing world population further spreads the food gap. Ample evidence exists that improved on-farm water management can close water-related yield gaps to a considerable degree, but its global significance …

Indigenous Latin America in the twenty-first century

Indigenous peoples made significant social progress, experienced a reduction in poverty levels in several countries and gained improved access to basic services during the boom of the first decade of the century, but they did not benefit to the same extent as the rest of Latin Americans, according to a …

Glacial lake drainage in Patagonia (13-8 kyr) and response of the adjacent Pacific Ocean

Large freshwater lakes formed in North America and Europe during deglaciation following the Last Glacial Maximum. Rapid drainage of these lakes into the Oceans resulted in abrupt perturbations in climate, including the Younger Dryas and 8.2 kyr cooling events. In the mid-latitudes of the Southern Hemisphere major glacial lakes also …

Biomass resilience of Neotropical secondary forests

An analysis of above-ground biomass recovery during secondary succession in forest sites and plots, covering the major environmental gradients in the Neotropics.

Addressing cryptosporidium infection among young children in low-income settings: The crucial role of new and existing drugs for reducing morbidity and mortality

Diarrheal disease is the world’s second leading cause of death among young children. It claims more than half a million lives of children under five years old each year, accounting for 9% of global child deaths. It is also a leading cause of morbidity in children, including chronic malnutrition. The …

Increasing beef production could lower greenhouse gas emissions in Brazil if decoupled from deforestation

Recent debate about agricultural greenhouse gas emissions mitigation highlights trade-offs inherent in the way we produce and consume food, with increasing scrutiny on emissions-intensive livestock products. Although most research has focused on mitigation through improved productivity, systemic interactions resulting from reduced beef production at the regional level are still unexplored. …

Analysis of particulate emissions from tropical biomass burning using a global aerosol model and long-term surface observations

We use the GLOMAP global aerosol model evaluated against observations of surface particulate matter (PM2.5) and aerosol optical depth (AOD) to better understand the impacts of biomass burning on tropical aerosol. To explore the uncertainty in emissions we use three satellite-derived fire emission datasets (GFED3, GFAS1 and FINN1) in the …

Anticipating the international spread of Zika virus from Brazil

In May, 2015, locally acquired cases of Zika virus—an arbovirus found in Africa and Asia-Pacific and transmitted via Aedes mosquitoes—were confirmed in Brazil. The presence of Aedes mosquitoes across Latin America, coupled with suitable climatic conditions, have triggered a Zika virus epidemic in Brazil, currently estimated at 440 000–1 300 …

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