"In fact, only in the case of essentially complete elimination of emissions can the atmospheric concentration of CO2 ultimately be stabilized at a constant level." IPCC 2007 AR4 Ch 10 FAQ 10.3 

Bill Gates
​ ​TED Talk
Innovating to
​ Zero Carbon

It is scientifically impossible for today's catastrophic atmospheric carbon dioxide concentration (400 ppm) to fall ​unless our industrial carbon emissions stop, and we must get below 350 ppm to prevent planetary catastrophe. 
"We should be talking about emissions targets, and the right emission target is zero."
(Ken Caldeira climate expert Stanford​)
"I asked the top scientists on this several times: Do we really have to get down to near zero? Can't we just cut it in half or a quarter? And the answer is that until we get near to zero, the temperature will continue to rise." (Bill Gates)
can get us to 350 ppm CO2
                                     The Burning Age Is Over
                                 Julie Johnston sustainability education consultant, GreenHeart, Education

                                The only future is a ZERO COMBUSTION future
August 2017 Mark Jacobson ​139 countries zero fossil fuel energy by 2050

15 April 2016​​  Fossil fuels could be phased out worldwide in a decade- new study

Carbon Majors
Nov 2013 study ​traces 2/3 of industrial CO2 emissions
​to 90 institutions​
June 2014 Economic study Carbon tax works well
​The Economic, Climate, Fiscal, Power,
and Demographic Impact of a National
Fee-and-Dividend Carbon Tax
Sept 2014Zero Carbon Emissions Manifesto For Climate Justice Movement
VIDEO Bill Gates
'These [mitigation] pathways would require substantial emissions reductions over the next few decades and near zero emissions of carbon dioxide and other long-lived greenhouse gases by the end of the century'. (IPCC 2014 AR5 Headline Statements)
'Without mitigation policies, fossil fuel and industrial emissions could reach 55-70 GtCO2 by 2050 and around 90 GtCO2 by 2100. This is in stark contrast with a low carbon future, where the energy system needs to be virtually zero carbon by 2100' (PwC Briefing: IPCC Fifth Assessment Report (AR5) Working Group III – Mitigation of Climate Change April 2014)
In 2014 The IPCC says global emissions must be dropped to near zero ‘...pathways (for mitigation)... would require substantial emissions reductions ... and near zero emissions of carbon dioxide and other long-lived greenhouse gases by the end of the century.’ (IPCC AR5 20014 SYN SPM Headline Statements
​CO2 is the top cause of global warming and the sole cause of ​ocean acidification.

​Black carbon (soot) is second only to CO2​in global warming contribution, ​so zero carbon now appropriately means zero CO2 and zero black carbon.
IPCC 2014 AR5
​ .. near zero emissions of carbon dioxide by the end of the century.

June 2015 Australia
​Groups ​including the ​public health
​association call for zero carbon by 2050
Zero Carbon World Youtube channel
VIDEO The Burning Age
Mapping Zero
24 Dec 2016It's Official: Solar Energy Cheaper Than Fossil Fuels
The world’s biggest gamble 2016 'Only a global zero carbon roadmap ...'
VIDEO Aug 2017
Mark Jacobson
​139 countries​ energy
Zero fossil fuels 2050​
The IPCC 2018 1.5C report say global emissions have to be cut 50% (from 2020) by 2030 reaching net zero emissions by 2050 with virtual elimination of fossil fuel energy emissions. 
The net zero buzzword that everyone is falling for is a phony target for fake mitigation 
11 Dec 2021 10 myths about net zero targets and carbon offsetting, busted- by experts