While researchers noticed the trends relating to greenhouses and the possible impacts on climate in the 1970's, it wasn't until the 1990's that computer modelling allowed a consensus position to form: greenhouse gases were deeply involved in most climate changes and human-caused emissions were bringing discernible global warming.
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Western Alien Nation
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While researchers noticed the trends relating to greenhouses and the possible impacts on climate in the 1970's, it wasn't until the 1990's that computer modelling allowed a consensus position to form: greenhouse gases were deeply involved in most climate changes and human-caused emissions were bringing discernible global warming.