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Delegates to the UN climate conference in Poland have reached agreement on how to implement the 2015 Paris Climate Accord, which comes into force in 2020. What are the key points to come out of the meeting?

• Read the five key points here
• Climate change: Where we are in seven charts
• What is climate change?

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Tory MSP Maurice Golden begins by agreeing that there is a climate emergency that must be tackled.

More needs to be done to decarbonise heating he argues.

Mr Golden insists that targets on climate change must be deliverable and we must work on a cross-party basis to reach practical solutions.

He advocates for a circular economy, saying this will help tackle climate change and boost the economy.

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Ms Gougeon argues the Scottish government have taken the most ambitious and pragmatic approach.

The transition from a carbon economy must be fair to all, says the minister.

She adds that to suddenly end oil and gas production would hit thousands of jobs.

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Andy Wightman argues the Green motion does not call for an immediate halt to oil and gas extraction, rather the policy of maximum economic recovery of oil and gas is incompatible with addressing the climate emergency.

The minister cites the work of the Just Transmission Commission, then pivots to fracking, arguing the Scottish government will produce its final policy position when the consultation process is completed.

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A net-zero target for reducing greenhouse gas emissions is "necessary" in Scotland's Climate Change Bill to limit global temperature rises, according to MSPs.

The bill has been criticised by environmentalists for not setting a firm date for this goal.

It proposes cutting them by 90% by 2050 and setting a net-zero target when a "clear pathway" exists to achieve it.

Holyrood's environment committee said a "greater urgency of action" was needed.

• Scotland could be 'net zero' for emissions, says WWF Scotland
• 'Disappointment' over climate change target
• Read more here

Natural Environment Minister Mairi Gougeon begins by reflecting on extreme weather events caused by climate change, such as flooding in Malawi.

The Climate Change Bill means Scotland will have the toughest legislation in the world, she states.

We've been clear we want to go further and achieve net-zero emissions on all greenhouse gases as soon as possible, which is why updated advice was sought.

This advice is due on 2 May.

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A decision on whether to ban fracking in Scotland has been delayed, the Scottish government has said.

A moratorium on the controversial process has been in place since 2015, and the government said in October 2017 that it backed an "effective ban".

Scottish ministers pledged they would set out their finalised policy on fracking by the end of March.

However, they have now said they will launch a further consultation process after the Easter break.

Read more here.

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Ms Johnstone says Brexit may seem like a crisis here, but the devastating impact of climate change on countries like Malawi and Mozambique is a bigger crisis.

The Green MSP calls on the parliament to set a net zero carbon emissions in the forthcoming Climate Change Bill.

She says it is frustrating the Scottish government is dragging its feet on an outright ban on fracking.

The Green MSP points out she led the first fracking debate five years ago and calls for primary legislation implementing a ban.

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Dozens of towns and cities across the UK have declared "a climate emergency".

There's no single definition of what that means but many local areas say they want to be carbon-neutral by 2030.

Some councils have promised to introduce electric car hubs or build sustainable homes to try to achieve that goal.

It's a much more ambitious target than the government's, which is to reduce carbon emissions by 80% (compared to 1990 levels) by 2050.

The United Nations says we could have just 12 years left to limit a climate change catastrophe.

Green MSP Alison Johnstone begins saying we have just over ten years to act to avoid climate catastrophe.

"The climate emergency is already on our doorstep."

Ms Johnstone praises the global youth strike for climate action led by Greta Thunberg, with 5,000 young people attending protests in Glasgow and Edinburgh alone.

It is unacceptable that schoolchildren have to use their schooldays to urge adults to act she tells the chamber.

Thousands of school pupils across Scotland have taken part in a protest to raise awareness of climate change.

Organisers said students in at least 18 areas were going on strike, inspired by the Fridays for Future movement.

A number of Scottish councils said children would not face punishment if they took part in the protests with their parents' permission.

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The Scottish Green Party will now lead a debate on the 'climate emergency'.

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Green MSP Ross Greer thanks colleagues in three other parties for working constructively, adding it brings him no pleasure to have to debate this "crisis" today.

It would be a dereliction of duty not to do so, adds Mr Greer.

He argues the UK government ignored the strong remain votes in Scotland, Northern Ireland and Gibralter, and has been "underhand, constructive and arrogant in its efforts to stop us".

Mr Greer argues: "Theresa May is still playing chicken with the madmen inside her own party."

This decision could be handed over to let the people decide, but it that does not happen says Mr Greer, then Article 50 must be withdrawn.

Scotland's vote to remain is being ignored, insists Europe Secretary Fiona Hyslop.

Regarding the UK-wide vote to leave, she argues that people should be allowed to change their mind when new information comes to light.

We can chart a new route forward, she concludes.

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Tory MSP Jamie Greene commends the five million people who signed the petition calling for Article 50 to be revoked and those who marched on Saturday, although he adds he does not agree with them.

Mr Greene points out that to achieve constitutional change a vote must be taken, not a petition or a march.

He says the Tories will vote against the motion and SNP and Labour amendments at decision time.