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Polish president vetoes Kyoto Protocol, pending new analysis

NEWS: Andrzej Duda says he wants to see impact of treaty’s second phase on economy in decision that sparks anger in developing world

NEWS: Country can loosen fossil fuel’s grip on energy system by quintupling share of renewables to 38% by 2030, says IRENA

NEWS: ExxonMobil, Shell and BP’s bullish energy use projections are based on dodgy assumptions, say analysts at Carbon Tracker

BLOG: Interactives from the likes of NASA, WRI and the Financial Times open up hours of fun for the global warming watcher

NEWS: Six heads of state are endorsing a World Bank campaign to make polluters pay, while Paris climate text ignores the subject

NEWS: Bullish projection brings relief to panel manufacturers, while Agricultural Bank of China issues US$1 billion green bond

NEWS: Bleak analysis suggests regional leaders invest in energy efficiency and ditch lavish subsidies to limit climate damage

ANALYSIS: Christine Lagarde calls on governments to back carbon pricing, slash fossil fuel subsidies as finance leaders gather in Peru

COMMENT: BBC apology after complaints about irreverent radio show generated cheering in climate-sceptic circles, but ultimately own goal for backers

ANALYSIS: We round up the reaction to New Delhi’s contribution to a UN climate change deal

NEWS: Hotly anticipated climate pledge from New Delhi needs an estimated US$2.5 trillion of international support

NEWS: Emerging economy commits to carbon emissions climax by 2025, though holds back details on how much aid needed

This week’s top climate politics and policy stories. Sign up inside to have our Friday briefing sent to your inbox

NEWS: Pledge to ensure 40% of energy comes from non fossil fuels to headline impending plan from Delhi

NEWS: World’s third-largest polluter plans to balance development with environment protection as it combats climate change

COMMENT: India’s anticipated commitment to climate action will be nothing short of transformational given challenges on the ground

COMMENT: If governments do not agree what is necessary to stay below the 2C threshold, will the Paris summit have been a failure?

NEWS: British cuts to clean energy support have baffled financiers, says consultancy EY, while Santiago has a winning strategy

NEWS: Mooted target to cut CO2 15% by 2030 is based on existing infrastructure projects and doesn’t raise ambition, say experts

ANALYSIS: Venture capitalists take on establishment with experimental device, but are optimistic time frames damaging the race?