[FrenchAmerican]

Steel is amazing, but nowadays I find even more amazing that we can replace it by wood in many circumstances. Skyscrapers in wood? Checked.

And wood can often replace concrete.

Building using wood sequesters carbon from the atmosphere and, as an ever bigger importance, avoid the CO2 emissions due to drilling, melting, refining etc, e.g. all operations needed to produce steel and concrete.

However, we need to "grow" wood in a truly sustainable way. Plantations of tree for timber are not forests from an ecological point of view: monoculture (and even cloning of a single tree), many pesticides, home to very little biodiversity and far less carbon sequestered in the soil (only 25% AFAIK).