Lelo Nxumalo

Executive Summary This analysis evaluates the macroeconomic impact of expanding social protection (unemployment benefits) in Turkey by 33%. Using a micro-founded DSGE model calibrated to the Turkish economy, we find that financing methods determine policy success. Labor Tax Financing (The "Death Spiral"): Attempting to fund benefits via labor taxes causes the formal sector to collapse. The model identifies a "Fiscal Cliff" at a 40% tax rate. VAT Financing (The Viable Path): A Consumption Tax (VAT) increase from 18% to 20.6% successfully funds the program with significantly less damage to employment. 1. Country Context: The Turkish Economy in 2024-2025 To understand the simulation results, it is essential to situate them within Turkey's current macroeconomic reality. The economy is currently navigating a "rebalancing" phase ch...

The satellite time-lapse you see here isn't a simulation. It's a terrifying, real-world look at the 2024 Rio Grande do Sul floods, a climate catastrophe unfolding in just a few frames. The GIF begins in early 2024, showing the city of Porto Alegre and the Guaíba Lake under normal conditions. The land is green, and the rivers are calm. But as the dates advance to late April / early May, the final frame shows a horrifying transformation. A deluge of dark, sediment-filled water explodes from the riverbanks, swallowing entire landscapes and swamping the northern parts of the metropolitan area. This is what it looks like when a region receives months' worth of rain in just a few days—an event scientists have directly linked to the intensifying power of climate change. Methodology: This time-lapse was generated using Sentinel-2 satellite ima...

This analysis reveals significant land use changes across South America over two decades. The most striking trend is agricultural expansion at the expense of natural ecosystems. Croplands surged by 225,461 km² (+39.2%) , while Evergreen Broadleaf Forests—primarily the Amazon—declined by 287,426 km² (-4.4%) . This forest loss, equivalent to roughly the size of Italy, underscores ongoing deforestation pressures. Critical Findings: Grasslands expanded dramatically by 349,686 km² (+10.0%) , potentially reflecting forest conversion to pasture Permanent Wetlands experienced a catastrophic 49.9% decline , losing nearly 150,000 km², raising concerns about ecosystem services and biodiversity Savannas contracted by 128,693 km² (-3.5%) The spatial pattern shows concentrated deforestation along the "arc of deforestation" i...

The Carbon Tax Dilemma: Efficiency, Politics, and the Payoff For decades, the consensus among global economists has been nearly unanimous: carbon pricing is the most efficient lever to reduce greenhouse gas emissions. By internalizing the social cost of carbon—making polluters pay for the damage they cause—a tax theoretically steers the entire economy toward cleaner alternatives without micromanagement by the state. However, the political reality in the United States has been far more complex. While the passage of the Inflation Reduction Act (IRA) in 2022 marked a historic shift in US climate policy, it relied almost exclusively on "carrots" (subsidies and tax credits) rather than "sticks" (carbon taxes). Despite the success of th...

How well do quarterly changes in PMI predict economic growth? An analysis of 10+ years of data (Q1 2015 - Q3 2025) When it comes to tracking economic momentum, quarterly changes in Purchasing Managers' Index (PMI) data provide valuable signals about GDP growth. My analysis of over 10 years of data reveals which PMI indicators are the most reliable for economic forecasting. Manufacturing PMI: Moderate but Significant Both ISM and S&P Global manufacturing PMI show statistically significant correlations with manufacturing GDP growth, with S&P Global slightly outperforming. Manufacturing PMI Growth Correlations ISM Manufacturing PMI: r = 0.451 (p = 0.0027) S&P Global Manufacturing PMI: r = 0.520 (p = 0.0004) ...

The Institute for Supply Management's (ISM) Manufacturing Purchasing Managers' Index remains one of the most closely watched economic indicators in the United States. As we reflect on recent trends spanning both the past two years and the broader decade-long trajectory, a nuanced picture of American manufacturing emerges—one marked by resilience, structural challenges, and the enduring impact of global disruptions. The Recent Struggle: Two Years of Persistent Contraction The past two years have been particularly challenging for U.S. manufacturing. From November 2023 through October 2025, the PMI has remained in contraction territory for an overwhelming majority of the period—hovering around an average of 48.4, well below the critical threshold of 50 that separates expansion from contraction. ...

The link between global trade and domestic inflation When import prices surge—whether from tariffs, supply chain disruptions, or currency fluctuations—how much of that increase actually shows up in the prices consumers pay at the store? This question has become increasingly important in our globalized economy, especially as policymakers debate trade policy and try to forecast inflation. The 20-30% Rule A robust finding in economics research is that import price passthrough to consumer prices in the United States is around 20-30%. This means that if import prices increase by 10%, consumer prices typically rise by 2-3%. Key studies establishing this benchmark include: Campa & Goldberg (2005): Found 25% passthrough for the US over 1975-2003 McCarthy (2007): Estimated 20-30% passthrough using structural VAR model...