The official entry into force of the Paris Agreement on climate change which commits 193 countries to limit global temperature rises to below 2 degrees, is an “extraordinary milestone."

Human health is bound to suffer if global warming goes beyond the limits agreed in December at the Paris climate change conference.

That’s the view of Jörg Hacker, a member of the UN Secretary-General’s Scientific Advisory Board.

Tackling climate change is the only way to address poverty, according to the UN’s leading expert on climate issues.