<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">methane</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31340205</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:31:45</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">methyl hydride</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ Colorless, odorless, highly flammable gas, the simplest alkane. Methane occurs in natural gas, as firedamp in coal mines, and is produced by decaying vegetation and in the guts of ruminants. Methane is used as a fuel, and as a starting material in manufacture of chemicals. Methane carried into the stratosphere by rising air acts as a greenhouse gas and degrades the ozone layer. ]]></dc:description></metadata>