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Andrew Robertson
Attended University of Birmingham
Lived in Bath
1,765 followers|140,212 views
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Andrew Robertson

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I rarely share adverts but...
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Andrew Robertson

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Err... he's got a point I suppose.
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Julien Amelot's profile photoJohn Donovan's profile photo
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What is America doing to itself? 4 imbeciles in the race for president and rafts of really good people just sitting on the sidelines! 
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Andrew Robertson

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Nothing to see here, it's all good for us anyway, whatever it is that's not happening.

This is what people mean by 'the climate's changed before'.
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Andrew Robertson

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Some more physics for you.
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Thankfully, climate change isn't really happening and everything is bound to get better all by itself any century now✴︎.

✴︎(note sarcasm filter)

On a related note, can anyone tell me how to short Australian tourism?
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Andrew Robertson

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Just in case you thought you, or our entire planet and its entire history, was in the slightest bit important:

Each galaxy in this video is home to an average of about 400 000 000 000 stars, with several times that worth of planets. And this is only a very, very small part of the observable universe.
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Andrew Robertson

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It's about time someone made a film about this.

(Correction, it appears a few people already have)

And I'm so glad Christopher Nolan is at the helm.
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This is about more than science.

It is a neutral discussion not only of the US presidential candidates understanding of how our world works but also awards (and subtracts) points for detailed plans. Clinton wins with 64/100, losing points for not explaining how she will implement some of her plans, Stein comes second with 44/100, losing points for having no details about how to achieve her goals and for general anti-science quackery and, well, you can guess who gets 7/100 and why. But if you're supporting that guy, you won't care anyway.
 
Folks, I cannot emphasize enough how important vote this is. From global warming to global thermonuclear war, our very futures rarely have depended on such a critical decision point. Here's what the science -- or lack thereof -- says:
Clinton: 64
Stein: 44
Johnson: 30
Trump: 7

Scientific American evaluates responses from Clinton, Trump, Johnson and Stein to 20 questions
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Paul M
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But if you're supporting that guy, you won't care anyway.

It's even worse than that. Those supporting Trump wear his ignorance as a badge of honor. 
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If you read this carefully, you discover that he has only a single experiment in California to support his claim. The others he mentions are experiments where temperature was raised but CO2 was not. His one experiment was specifically on "the kinds of plants that live in California grasslands" but he is pretending that the result generalizes to crop plants in general.

There have been many experiments showing increased crop yield for increases in CO2 well above the current level. Examples include:

http://scienceandpublicpolicy.org/images/stories/papers/originals/water_stress.pdf

http://www.fao.org/docrep/w5183e/w5183e06.htm

http://www.plantsneedco2.org/html/PositiveEffectsOfCO2OnAgriculture2.pdf

http://www-personal.ksu.edu/~vara/allen-lh-ecsc04.pdf

http://journal.frontiersin.org/article/10.3389/fenvs.2015.00048/pdf

A point he does not mention is that the effect of CO2 on yield is different for different plants. It is relatively large for C3 plants, considerably smaller for C4, the difference being in the mechanisms for photosynthesis. Maize is a C4 plant--the most important crop for which CO2 fertilization is a relatively small effect (sugar cane being another). Rice, wheat and soy beans, the other three of the four most important food crops, are all C3.

Nuccitelli tries to make it sound as though only global warming skeptics believe in future effects of CO2 fertilization. If you read the literature, you will find that scholars estimating the effect of future climate change take it for granted. To take one example at random:

"For wheat, we project small or occasionally negative effects of mitigation for projected yields, because of stronger CO2 fertilization effects than in maize,"
(Estimated impacts of emission reductions on wheat and maize crops, Claudia Tebaldi and David Lobell. http://link.springer.com/article/10.1007/s10584-015-1537-5)

You might want to check that my comments are correct and adjust your willingness to believe the Guardian and Nuccitelli accordingly.
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Andrew Robertson

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This is a great visual on climate change, check it out.
 
Climate change is happening all around us, but when your life is far more driven by the day-to-day weather, it can be hard to grasp the reality of a process playing out incrementally, globally, and over the course of generations. It’s much easier if you have a compelling visualization—and thankfully, one climate scientist with a flair for data design has made one.
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Andrew Robertson

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The physics of the Fosbury Flop.
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Andrew Robertson

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Never cover Stairway to Heaven

...unless you can do it well enough to get a standing ovation from Led Zeppelin themselves.
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Story
Introduction
Interests: Information/network theory, non-linear chemistry,  aikido.
Education
  • University of Birmingham
    PhD in Chemistry
  • UMIST
    BSc(Hons) in Chemistry with Computer-Aided Chemistry
Basic Information
Gender
Male
Collections Andrew is following
Work
Occupation
Associate Professor of Chemistry
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Previously
Bath - Manchester - Birmingham UK - Fukuoka
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