<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>brtkdotse</author><text>Not quite, it depend where the carbon forming the CO2 comes from. Carbon extracted from sewage is already in the carbon cycle giving a net 0 carbon when burned. Extracting and burning fossile carbon ADDS carbon to the cycle, hence the problem</text><parent_chain><item><author>loeg</author><text>Either?  The problem is that combusting it produces CO₂.</text></item><item><author>brtkdotse</author><text>Natural gas or biogas? Same gas but the first is fossil while the other is made from fermenting sewage and hence renewable</text></item><item><author>jdsully</author><text>Crazy they were able to label natural gas as “sustainable” but nuclear just barely squeaked in.</text></item></parent_chain></comment><story><title>EU experts to say nuclear power qualifies for green investment label: document</title><url>https://www.reuters.com/article/us-europe-regulations-finance/eu-experts-to-say-nuclear-power-qualifies-for-green-investment-label-document-idUSKBN2BJ0F0</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>hedora</author><text>If the CO2 was recently extracted from the atmosphere, then burning the gas is carbon neutral.&lt;p&gt;It might be more thermodynamically favorable to use the gas as input to a carbon capture process.  Even if that is the case, bootstrapping a market for biogas will lower the cost of biogas.  In turn, that will lower the cost of biogas-based carbon sequestration.</text><parent_chain><item><author>loeg</author><text>Either?  The problem is that combusting it produces CO₂.</text></item><item><author>brtkdotse</author><text>Natural gas or biogas? Same gas but the first is fossil while the other is made from fermenting sewage and hence renewable</text></item><item><author>jdsully</author><text>Crazy they were able to label natural gas as “sustainable” but nuclear just barely squeaked in.</text></item></parent_chain></comment><story><title>EU experts to say nuclear power qualifies for green investment label: document</title><url>https://www.reuters.com/article/us-europe-regulations-finance/eu-experts-to-say-nuclear-power-qualifies-for-green-investment-label-document-idUSKBN2BJ0F0</url></story>