More extreme events, more frequently, causing more damage both in economic and human terms, mostly. Also, some places uninhabitable around South and South-East

More extreme events, more frequently, causing more damage both in economic and human terms, mostly. Also, some places uninhabitable around South and South-East Asia, leading to lots of millions of refugees. It is very difficult to quantify accurately, because this is unprecedented in the history of the planet, never mind the history of the human race.