North America
Asia
Felix Preston and Shane Tomlinson

The joint announcement on climate change contributions by the United States and China marks a step-change in diplomacy in the run up to a potential global deal in Paris next year.

The timing of the announcement will inject momentum into the international negotiations, coming at an important moment before the next round in Lima in early December, and ahead of all countries submitting their intended contributions in the first quarter of 2015. Other countries, especially developed and emerging economies like Australia, Canada, Japan, India, Brazil and South Africa, will be recalibrating their offers in light of the US-China statement.

In the statement, the United States says it intends to achieve economy-wide targets of reducing emissions by 26-28% below the 2005 level in 2025; while China intends to achieve a peaking of CO2 emissions around 2030 and to increase the share of non-fossil fuels in primary energy consumption to around 20% by 2030. This builds on the recent deal in October by the European Union to reduce its emissions by at least 40% in 2030 from a 1990 baseline.

This is the first time that China has put a date on peak emissions, and it is highly symbolic that it made the pledge alongside the United States. China deserves credit from the international community for stepping up to the plate and showing leadership on this issue. It is equally important that President Obama has signaled continuing commitment to act on climate change. Indeed, whether Obama is able to make this deal stick despite resistance from the new Republican-controlled Congress is now a critical question for his legacy, as well as for future US-China cooperation.

The substance of both countries' announcements falls short of what scientists say is needed to avoid dangerous climate change. The US goal of 26-28% in 2025 is less than what US legislation proposed at the time of the Copenhagen Summit in 2009 was supposed to achieve - this implied a 30% reduction in 2025. To put this in context, the Intergovernmental Panel on Climate Change projects that current efforts put us on a pathway for 3.7 to 4.8 degrees celsius of global warming – far above the 2 degrees target that governments have agreed to work towards.

The level of ambition in the Chinese offer is not yet clear, because the volume of peak CO2 has not been announced and there is some flexibility on the peak year -'around 2030’ but as soon as possible. Some experts had hoped for an earlier peak in 2025, but a near-2030 peak is not necessarily incompatible with a global pathway to 2 degrees this century. The 'shape of the emissions curve' – when emissions start to plateau, and how sharply they fall after the peak – is just as important.

For the complete article, please see Chatham House.

Oli Brown, SDG Knowledge Hub / IISD

A new publication on SDGs and foreign policy, prepared by researchers at the German think tank adelphi, highlights a phenomenon I call this the ‘Great Splintering’ – the fracturing of political will for collective action on the global stage. This article outlines five steps we could take to revive multilateralism.

Adaptation & Resilience
Climate Change
Conflict Transformation
Environment & Migration
Security
Water
Sub-Saharan Africa
Natalie Sauer, Climate Home News

Satellite analysis shows ‘vanishing’ lake has grown since 1990s, but climate instability is driving communities into the arms of Boko Haram and Islamic State. Climate change is aggravating conflict around Lake Chad, but not in the way experts once thought, according to new research.

Climate Change
Climate Diplomacy
Europe
North America
Asia
Natalie Sauer, Climate Home News

At a meeting of the Arctic Council, secretary of state Mike Pompeo refused to identify global warming as a threat, instead hailing an oil rush as sea ice melts. The US refused to join other Arctic countries in describing climate change as a key threat to the region, as a two-day meeting of foreign ministers drew to a close on Tuesday in Ravaniemi, Finland.

Biodiversity & Livelihoods
Environment & Migration
Forests
Global Issues
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Around 1.6 billion people depend on forests for their livelihood, and about 2.6 billion people rely directly on agriculture. Deforestation, land degradation, and unsustainable management of ecosystems threaten those livelihoods and may contribute to resource-related conflicts and social unrest.