Author Archives: Marina Aldridge Aldridge

Renewable Natural Gas Gains Policy Support

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Renewable Natural Gas has moved from a niche waste-to-fuel pathway into a more defined part of U.S. transportation policy. The shift is not mainly a technology breakthrough. It is a policy and accounting change: federal tax credits, emissions-rate tables, and state fuel incentives are giving producers and fleet operators clearer signals about how RNG may be valued when it is used as transportation fuel.

The case for RNG in transportation is tied to two systems that cities and rural regions already manage: organic waste and heavy-duty fuel demand.… Read the rest

Transit Funding Benefits in Smaller Cities

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Transit funding benefits are not evenly distributed across every urban area. Recent research cited in the available evidence suggests that small and midsize cities may gain more new riders from each added federal transit dollar than the largest metropolitan systems, especially where funding is paired with service design that fits local travel patterns.

That finding matters for green transportation policy because many climate and mobility discussions concentrate on major rail and bus systems in large cities.… Read the rest

Recycling Infrastructure Investment Gap in U.S.

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Recycling Infrastructure Investment is now a measurable public-finance question rather than a general environmental aspiration. In August 2024, the EPA estimated that the United States would need $36.5 billion to $43.4 billion by 2030 to bring curbside collection, drop-off systems, processing, composting, anaerobic digestion, and related recycling infrastructure to modern standards. That estimate gives cities, states, and waste authorities a clearer scale for planning, but it also shows how far current funding levels sit below the agency’s modeled need.… Read the rest

GGRF Ruling Raises Community Project Risk

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The GGRF Ruling has left community climate projects in a legally protected but operationally difficult position. As of September 3, 2026, the core point is narrow: the challenged grant terminations were blocked, yet access to the disputed money remained delayed while further appeals were being prepared.

That distinction matters for local governments, nonprofit lenders, community development finance partners, and project sponsors that expected the Greenhouse Gas Reduction Fund to support clean energy deployment, climate resilience, energy efficiency, and related infrastructure.… Read the rest

Powering the Future: Renewable Energy Integration in Sustainable Transportation Systems

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The term “green transportation” often brings up images of eco-friendly cars and good deeds. But the truth is, it’s a tough challenge in engineering.

Imagine making our whole transportation system use less carbon. It’s like a big change in how we use energy. We need everything to work together smoothly.

The sun shines only during the day, and the wind blows when it wants. This is the problem Khalifa University’s Advanced Power and Energy Center (APEC) is trying to solve.… Read the rest

The Rise of Geothermal 2.0 and Next-Generation Underground Energy Systems

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The Earth’s core is a 10,800°F nuclear reactor that has been active for 4.5 billion years. Yet, we’re stuck burning rocks to boil water. This is because traditional methods are too demanding.

They need three things: heat, permeable rock, and water. This is called the “hydrothermal triple lock.” It’s why we’ve only tapped into energy near tectonic plate boundaries.

But now, we’re breaking free from this limitation. Welcome to Geothermal 2.0.… Read the rest

Next-Gen Waste to Energy Solutions Creating Power from Trash

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The world is facing a huge trash problem. Waste production is expected to reach 3.4 billion tons by 2050. Landfills also pollute, releasing over 1.6 billion tons of harmful gases yearly.

A strong solution is turning trash into energy. Waste-to-energy systems change non-recyclable waste into electricity, heat, or fuel. This method helps manage waste and creates clean energy.

It’s not just an idea. Countries around the globe are making it work.… Read the rest

LCA Careers Guide: Skills and Opportunities in Circular Sustainability

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Our economy is changing in a big way. For years, we followed a “take-make-dispose” model. This model leads to a lot of waste and uses up limited resources.

Leaders like Marc Dutil of Canam see this change as key. He says sustainability is like workplace safety—it’s essential. Travis Dahl of One Click LCA agrees, pushing for a forward-thinking approach. The message is clear: every job can help build a better future.… Read the rest

How to Start a Career in Green Tech: 2026 Job and Salary Overview

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The world of work is changing fast. By 2026, finding a job in the climate economy will be tough but vital.

There’s a big shift happening. Jobs that focus on keeping the grid stable, controlling energy costs, and following rules are key. LinkedIn says “Sustainability Specialist” is one of the top jobs to watch.

This change opens up new paths for workers. Companies want people who can adapt and bring new ideas.… Read the rest

Why Geothermal Brines?

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Imagine the key to our clean energy future lies in hot, salty water a mile down. It’s not the glamorous hero we thought it would be.

For years, we’ve used these brines for power. It’s a reliable, always-on source with a small footprint. But researchers found something more. The same water is full of important minerals, like lithium.

This is more than just a coincidence. It’s a big change. We can get energy and materials from one system.… Read the rest