Editing Carbon sink (section)

== Artificial carbon sinks ==
===Geologic carbon sequestration===
{{Main|Carbon sequestration#Geologic carbon sequestration}}

=== Wooden buildings ===
{{See also|Green building and wood}}
[[File:Mjøstårnet.jpg|thumb|[[Mjøstårnet]], one of the tallest timber buildings, at its opening 2019]]
Broad-base adoption of [[mass timber]] and their role in substituting steel and concrete in new mid-rise construction projects over the next few decades has the potential to turn [[List of tallest wooden buildings|timber buildings]] into carbon sinks, as they store the carbon dioxide taken up from the air by trees that are harvested and used as mass timber.<ref name="Churkina-2020"/> This could result in storing between 10 million tons of carbon per year in the lowest scenario and close to 700 million tons in the highest scenario. For this to happen, the harvested forests would need to be [[Sustainable forest management|sustainably managed]] and wood from demolished timber buildings would need to be reused or preserved on land in various forms.<ref name="Churkina-2020"/>

Using rapidly renewable plant materials like [[bamboo]], [[straw]] or [[hempcrete]] can be further carbon sinks.<ref>{{Cite journal |last=Jami |first=Tarun |last2=Karade |first2=S. R. |last3=Singh |first3=L. P. |date=2019-12-01 |title=A review of the properties of hemp concrete for green building applications |url=https://www.sciencedirect.com/science/article/abs/pii/S0959652619327222?via=ihub |journal=Journal of Cleaner Production |volume=239 |pages=117852 |doi=10.1016/j.jclepro.2019.117852 |issn=0959-6526}}</ref><ref>{{Cite journal |last=Arrigoni |first=Alessandro |last2=Pelosato |first2=Renato |last3=Melià |first3=Paco |last4=Ruggieri |first4=Gianluca |last5=Sabbadini |first5=Sergio |last6=Dotelli |first6=Giovanni |date=2017-04-15 |title=Life cycle assessment of natural building materials: the role of carbonation, mixture components and transport in the environmental impacts of hempcrete blocks |url=https://www.sciencedirect.com/science/article/abs/pii/S0959652617303876 |journal=Journal of Cleaner Production |volume=149 |pages=1051–1061 |doi=10.1016/j.jclepro.2017.02.161 |issn=0959-6526|hdl=10446/131799 |hdl-access=free }}</ref>