The transcript discusses climate change protests in Manhattan and a historic climate march. It highlights the UN climate summit's goals to foster political and diplomatic efforts for a binding treaty, following the failure of the 2009 Copenhagen summit. The absence of China and India's leaders at the summit is addressed, with assurances of their commitment to climate change. The UN aims to combat uncertainties by hosting side events with business leaders to discuss future steps towards a low-carbon economy.

What was the reaction of the UN regarding the absence of leaders from China and India at the summit?

What steps did the UN plan to take to ensure the summit leads to concrete actions against climate change?