The Inventory of Carbon and Energy (also known as the ICE database) is an embodied carbon database for building materials which is available for free (registration required). The ICE database originally contained embodied energy and embodied carbon factors. However, since 2019 embodied energy factors are no longer included. The data in the wider literature, which the ICE database relies upon, generally no longer reports the embodied energy of construction products. Instead, embodied carbon has become the main metric. Carbon emissions give a better indicator of the contribution of that energy to global warming and climate change.