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China's anthropogenic methane emissions were approximately 56 Mt in 2022, with the energy sector contributing 46 percent of this total. RMI proposes mitigating these emissions by accelerating the energy transition, utilizing market mechanisms to improve the viability of mitigation technologies, and increasing transparency through international cooperation and information disclosure.

The report examines GHG emissions from shrimp aquaculture, noting a wide range of intensities (2 to 99 kgCO2e/kg retail product) driven by production methods, feed, and land-use change. It highlights that while intensive systems are more common and generally less GHG-intensive per unit, the conversion of mangroves for extensive ponds creates massive emissions. Key mitigation opportunities include improving feed conversion ratios (FCR), adopting conversion-free feed, and transitioning to renewable energy.

The report finds that Spain's biofuel policies, particularly for biodiesel, have often resulted in marginal benefits and net emission increases due to a high reliance on imported fuels and feedstocks. While ethanol provided modest emission savings, the overall sector saw a GDP contraction in 2011. The study highlights that conventional biodiesel is a costly and environmentally damaging option compared to other renewable energy technologies, and recommends phasing out support for first-generation biofuels in favor of low-carbon alternatives.