This document discusses carbon taxes and their impacts. It covers how carbon emissions are causing climate change and environmental damage costing $200 billion annually. Two ways to reduce emissions are direct carbon taxes or cap and trade systems between companies. While carbon taxes aim to reduce negative externalities, they can increase costs for businesses and households. A tax of $23 per tonne in Australia had little environmental impact but did increase electricity and gas costs slightly for households. The conclusion argues the focus should be on developing green energy technologies through research instead of just controlling emissions.