Woruldlicu wearming is sēo ætīecnes in medemre hǣte þǣre lyfte nēah þǣm earde and gārsecga in nīwostum gēartīenum. Ealra þrosma is wæterþrosm hūru 95% ealra grēnes hūses þrosm, and is se drīfere þisse wearmunge.