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Sep 5, 2017 11 tweets 2 min read Read on X
1/ THREAD on how UK repeal bill paves the way for a removal of rights after #Brexit, explained by a prof of EU law:

bit.ly/2wAJhuP
2/ Rights may disappear in several ways. 1st, the suite of Brexit bills promised in 2017 Queen’s Speech will herald what may be …

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More from @ConversationUK

Aug 9, 2021
The #IPCC report shows:

At the moment, the world emits around 40 gigatonnes a year of CO₂ (and growing).

If the world reaches zero emissions by 2050, in each year until then, emissions must be no higher than 40% of 2021’s emissions on average. ⬇️ 🧵
To get emissions to peak and then start on a downward trend is fairly simple in theory.

There are several major changes that can be made in sectors like electricity, construction and transport, where there are readily available alternatives. ⬇️
But fossil fuel companies continue to fight to prevent action that threatens their profitability, lobbying governments to weaken legislation .

Even in countries with relatively strong climate policies, the power of the fossil fuel industry generates various contradictions.⬇️
Read 5 tweets
Aug 9, 2021
The #IPCC report’s conclusion:

Staying below 2°C this century will only happen if emissions reach net zero by 2050 is well publicised.

But global emissions must peak some time in the middle of this decade. In other words, within the next few years.
⬇️ 🧵
This shows global emissions must peak by the middle of the decade for warming of just 1.5°C to be possible.

1.5˚C = considered the “safe” limit.

2˚C = based on accepting the impacts we think that we can cope with.

Neither limit means completely avoiding the impacts. ⬇️
Going beyond those limits increasingly risks sudden, highly disruptive and irreversible impacts.

It's much easier to stop putting more carbon dioxide into the atmosphere than it is to remove it.

The more we emit the more we degrade the ecosystems that naturally soak it up. ⬇️
Read 5 tweets
Aug 9, 2021
The #IPCC report confirms:

As a result of human activities, the planet is changing at a rate unprecedented for at least thousands of years.

Climate scientist and lead author explains the profound changes of Earth’s oceans, ice and sea level rise ⬇️
Over the last decade, global average sea level has risen at a rate of about 4 millimetres per year.

This increase is due to two main factors:

- The melting of ice in mountain glaciers and at the poles

- The expansion of water in the ocean as it takes up heat⬇️
Ice sheets in particular are primarily responsible for the increase in the rate of sea level rise since the 1990s.

Sea level rise is leading to substantial impacts on coastal communities (a near-doubling in the frequency of coastal flooding since the 1960s). ⬇️
Read 8 tweets
Aug 9, 2021
As global temperatures rise, the intensity of storms increases

The graph show how much wetter storms that historically occurred once every 10 years are likely to become at temperatures 1.5°C or more above the late 19th century average

A lead author of #IPCC report explains🧵⬇️
A number of factors are intensifying the water cycle, but one of the most important is that warming temperatures raise the upper limit on the amount of moisture in the air.

That increases the potential for more rain. ⬇️
An intensifying water cycle means that both wet and dry extremes will increase.

Rainfall intensity is expected to increase for most land areas.

But largest increases in dryness are expected in:

Mediterranean, southwestern South America and western North America ⬇️
Read 4 tweets
Aug 9, 2021
The #IPCC report:

Under all scenarios examined, Earth is likely to reach the crucial 1.5℃ warming limit in the early 2030s.

Our climate scientists and IPCC authors explain why there’s still reason to act if Earth exceeds that limit. ⬇️ 🧵
Under the 2015 Paris Agreement, nations agreed to hold global warming to well below 2℃, and preferably limit it to 1.5℃.

The first global stocktake of that agreement will be held in 2023.

That’s one of the reasons global warming levels are being so keenly watched right now.⬇️
In the very low emissions scenario in the report:

Earth reaches 1.5℃ warming for a few decades, but drops back below it by the end of the century.

It’s still possible for Earth to keep below 1.5℃ global warming this century, if we rapidly cut emissions to net-zero. ⬇️
Read 8 tweets
Aug 9, 2021
The #IPCC report has been released. Here are what the experts say:

For the first time, the IPCC states unequivocally — leaving absolutely no room for doubt – humans are responsible for the observed warming of the atmosphere, lands and oceans. 🧵⬇️
Earth has warmed 1.09℃ since pre-industrial times

The #IPCC recognises the role of natural changes to the Earth’s climate

But it finds 1.07℃ of the 1.09℃ warming is due to greenhouse gases associated with human activities = pretty much all global warming is due to humans ⬇️
The #IPCC says human activities have also affected global precipitation (rain and snow).

Since 1950, total global precipitation has increased, but while some regions have become wetter, others have become drier. ⬇️
Read 12 tweets

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