Tim Kruger: Can we stop climate change by removing CO2 from the air?
تيم كروجر: هل بإمكاننا وقف تغيّر المناخ بالتخلص من ثاني أكسيد الكربون من الجو؟
Tim Kruger researches geoengineering: techniques to counteract climate change by deliberate, large-scale intervention in the earth system -- either by reflecting sunlight back into space or by reducing the level of carbon dioxide in the atmosphere. Full bio
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to cut emissions rapidly.
uncontentious statement,
that's slightly more contentious:
our remaining carbon budget
extremely rapidly,
من الانبعاثات فقط،
out of the atmosphere.
من ثاني أكسيد الكربون.
of these proposed techniques
من هذه التقنيات المقترحة
من ثاني أكسيد الكربون،
or in the oceans.
so-called artificial trees,
أو ما يسمى بالأشجار الاصطناعية،
من ثاني أكسيد الكربون.
whether they can be applied
economic and socially acceptable.
ومقبولة اقتصاديًا ومجتمعيًا.
will solve it on its own.
أي منها لوحده المشكلة.
they may form the silver buckshot
climate change in its tracks.
on one particular idea
to generate electricity
لتوليد الكهرباء
carbon dioxide out of the air.
feeds natural gas into a fuel cell.
بتحويل الغاز الطبيعي إلى خلية وقود.
is converted into electricity,
من الطاقة الكيميائية إلى كهرباء،
إلى جير وثاني أكسيد كربون.
thinking that I'm nuts.
ربما تظنون أنني مجنون.
all of the carbon dioxide generated,
هي أن كل ثاني أكسيد الكربون المولّد
and from the lime kiln, is pure,
either use that carbon dioxide
إما أن تستخدم ثاني أكسيد الكربون هذا
deep underground at low cost.
can be used in industrial processes,
في عمليات صناعية،
it scrubs CO2 out of the air.
من ثاني أكسيد الكربون.
electricity from natural gas,
من الغاز الطبيعي،
of CO2 into the air
من ثاني أكسيد الكربون إلى الجو
that figure is minus 600.
generation is responsible
حوالي ربع انبعاثات ثاني أكسيد الكربون.
of all carbon dioxide emissions.
all power generation with this process,
كل الطاقة المولدة بهذه العملية،
of the emissions from power generation
عن توليد الطاقة فقط
from other sectors as well,
من قطاعات أخرى أيضًا،
of overall carbon emissions.
من مجمل انبعاثات الكربون.
to counteract ocean acidification,
لمواجهة تحمض المحيطات،
by CO2 in the atmosphere.
بسبب وجود ثاني أكسيد الكربون في الجو.
carbon dioxide when you add it to seawater
بمعدل مرتين أكثر عند إضافته إلى مياه البحر
really complicated.
acidification is a good thing,
what the environmental consequences are,
التبعات البيئية الناتجة،
whether this treatment
ما إذا كانت هذه المعالجة
that it is seeking to cure.
step-by-step governance
لإجراء تجارب لتقييم الأمر بأمان.
to remove trillions --
from the atmosphere in the decades ahead.
من الجو في العقود القادمة.
think defense-sized expenditure,
المحلي... فكروا بها كنفقات دفاعية،
التي لا يمكن تفاديها.
of the scale of the problem
these thorny issues.
and our efforts to counter climate change.
وجهودنا لمواجهة ذلك.
to close our eyes, block our ears,
the consequences of our actions.
وأن نتصدى لعواقب أفعالنا.
undermine the will to cut emissions?
يضعف العزيمة لخفض الانبعاثات؟
importance of reducing emissions
على الأهمية القصوى للتقليل من الانبعاثات
we still need to examine them.
can't if we don't try.
لن نستطيع إن لم نحاول.
to restore the atmosphere,
لاستعادة الغلاف الجوي،
with a stable climate and healthy oceans.
والمحيطات الصحيّة.
as a cathedral project.
ربما يضعون الخطط ويرسون القواعد،
and dig the foundations,
to its full height.
من نصيب أحفادنا.
but we must start in the hope
ولكن يجب أن نبدأ على أمل
will be able to finish the job.
to ask you a couple of other questions.
أود أن أطرح عليك بعض الأسئلة.
of putting lime in the ocean.
it's pretty compelling --
من ثاني أكسيد الكربون.
we need to do an experiment on this.
experiment look like?
a series of experiments,
بسلسة من التجارب،
just very small stage-by-stage.
when you're trialing a new drug,
into human trials straight off.
are experiments entirely on land,
هو تجارب كاملة على الأرض،
away from the environment.
that that can be done safely,
حينها يمكنك فعلها بأمان،
the whole planet at some level.
نوعا ما عند مستوى محدد.
experiments in national waters,
في المياه الإقليمية،
of national funders to do that.
الممولين المحليين لفعل لذلك.
to counter ocean acidification in this way
تحمض المحيطات بتلك الطريقة
in international waters,
an international community working on it.
للعمل على الأمر.
you know, the ocean's all connected.
كل المحيطات متصلة ببعضها البعض.
about doing experiments on the planet,
عند القيام بتجارب على الكوكب،
which is really important.
that it is impossible to do,
سبب استحالة الفكرة،
in a transparent way.
that the answer will come back,
على احتمالية أن تكون الإجابة
That was really fascinating.
ABOUT THE SPEAKER
Tim Kruger - Geoengineering researcherTim Kruger researches geoengineering: techniques to counteract climate change by deliberate, large-scale intervention in the earth system -- either by reflecting sunlight back into space or by reducing the level of carbon dioxide in the atmosphere.
Why you should listen
While it is essential that we reduce global carbon emissions, that isn't going to be enough to avoid dangerous climate change. Research into proposed geoengineering techniques could prove vital in the fight to protect our planet. At the Oxford Geoengineering Programme, Tim Kruger aims to assess the range of proposed geoengineering techniques to determine which, if any, could be both technically feasible and benign environmentally, socially and ethically.
Kruger, a James Martin Fellow at the University of Oxford, is a co-author of "The Oxford Principles," a draft code of conduct for geoengineering research. It calls for geoengineering to be regulated as a public good, for public participation in decision-making and for disclosure of research and open publication of results.
In addition to his work at Oxford, Kruger is also CEO of Origen Power, which is developing a process that uses natural gas to generate electricity in a way that removes carbon dioxide from the atmosphere.
Tim Kruger | Speaker | TED.com