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Articles on Greenhouse gas emissions (GHG)

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A heat exchanger and transfer pipes at Dominion Energy’s Cove Point LNG Terminal in Lusby, Md. AP Photo/Cliff Owen

Biden’s ‘hard look’ at liquefied natural gas exports raises a critical question: How does natural gas fit with US climate goals?

The US, a minor liquefied natural gas supplier a decade ago, now is the world’s top source. That’s good for energy security, but bad for Earth’s climate. An energy scholar explains the trade-offs.
Recycling construction materials and water can make urban agriculture more sustainable. Lauren Moore/USDA

Urban agriculture isn’t as climate-friendly as it seems, but these best practices can transform gardens and city farms

A study of dozens of city gardens and urban farms across the US and Europe found several ways to boost their benefits, not just for their neighborhoods, but for the planet.
A worker lifts a solar panel to the roof of a home in Frankfort, Ky. Small-scale solar infrastructure can deliver green energy at a fraction of the life-cycle emissions as large solar farms. (AP Photo/Michael Conroy)

Small-scale solar has key benefits, and one critical weakness, over large solar farms

Looking to go solar? While small-scale solar delivers the best results with the least life-cycle impact, a mixed approach offers the best long-term path towards an all-electric future.
U.S. Special Presidential Envoy for Climate John Kerry and his Chinese counterpart, Xie Zhenhua, had front-row seats at COP28’s final session. Kiara Worth/UN Climate Change via Flickr,

Why the COP28 climate summit mattered, and what to watch for in 2024

The UN climate conference brought some progress. A former UN official who has been involved in international climate policy for years explains what has to happen now for that progress to pay off.
Birds fly past at sunset as smoke emits from a chimney at a factory in Ahmadabad, India, on Dec. 8, 2014. (AP Photo/Ajit Solanki)

Carbon pricing alone is not enough — other measures are needed to meet Paris Agreement targets

Carbon pricing can be a powerful tool to combat climate change and reduce emissions, but it needs to be accompanied by improved regulations, clean technology subsidies and financing mechanisms.
Planting trees on deforested lands in Panama. Jorge Aleman/Smithsonian Tropical Research Institute

Paying people to replant tropical forests − and letting them harvest the timber − can pay off for climate, justice and environment

It might seem counterintuitive to suggest timber harvesting when the goal is to restore forests, but that gives landholders the economic incentive to protect and manage forests over time.

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