An introductory video, produced by UNEP, to what Stockholm+50 is about.

Personally, I find it great to see live footage from the Stockholm conference back in 1972 -- so many years before I myself was born, world leaders were gathering together and discussing how to leave the planet in a sustainable state for future generations... 50 years later, have they done justice to their ambitions?

When we talk about climate action and just transition, we sometimes forget how important these factors are to ensuring and sustaining peace - without which property on this common planet cannot exist.

Speaking to a UN Security Council meeting yesterday, UN secretary-general Antonio Guterres has warned - once more - that climate change is “an aggravating factor” for instability, conflict and terrorism.

He said the regions that are most vulnerable to rising temperatures “also suffer from insecurity, poverty, weak governance and the scourge of terrorism". He said that when people lose their livelihoods after extreme weather events, “the promises of protection, income and justice – behind which terrorists sometimes hide their truce designs – become more attractive".

The urgency to act has never been stronger.

Contemporary discussion of climate policy rarely acknowledges inequality.

However, 10% of the world’s population is responsible for about half of all GHG emissions, while the bottom half of the world contributes just 12% of all emissions. This is not simply a rich versus poor countries divide: there are huge emitters in poor countries, and low emitters in rich countries.

Why do these inequalities matter? After all, shouldn’t we all reduce our emissions? Yes, we should, but obviously some groups will have to make a greater effort than others.

At the world level, a modest wealth tax on multimillionaires with a pollution top-up could generate 1.7% of global income. This could fund the bulk of extra investments required every year to meet climate mitigation efforts.

According to Lucas Chancel, co-director of the World Inequality Lab, and affiliate professor at Sciences Po, it’s time for us to acknowledge there can be no deep decarbonisation without profound redistribution of income and wealth.

What do you think? And most importantly, what would you be willing to give up in the time race to save the planet?

A mind-boggling news, a giant earth's black box intended as a blueprint for a post-apocalyptic society has started to record the earth's climate change activities.

For those who have seen Stanley Kubrick's sci-fi masterpiece from 1968 "2001: A Space Odyssey" may be imagining an imposing black monolith standing still in the middle of a desert. The reality is actually not far from it, the 10x4x3 metre black slab of steel will be built in Tasmania, Australia, to record hundreds of data sets, measurements and interactions relating to the health of our planet.

But it brought up a question on its relevance in today's life. Will it help the world meet the 1.5 degrees Celsius goal and move from commitment to action? Will you change your behaviour knowing that your activities are being recorded?