1602, 2018
  • 02-16 – The Kyoto Protocol

Today in chemistry history: The Kyoto protocol

By |February 16th, 2018|

On this day back in 2005, the world’s first legally-binding climate change agreement came into force. The Kyoto protocol, to which 192 countries are a party, aimed to reduce emissions of six greenhouse gases by 5.2% by 2012, relative to 1990. This graphic gives a brief overview of the agreement and the outcome of its first period.


1901, 2018
  • Susan Solomon

Today in Chemistry History: Susan Solomon, ozone depletion, and CFCs

By |January 19th, 2018|

Susan Solomon’s work led to confirmation that chlorine-containing compounds can deplete ozone. In particular, she explained why this depletion was focused over the poles. This graphic looks at how ozone depletion happens. Below, we’ll look in more detail at Solomon’s contributions.


2208, 2017
  • C&EN - The Chemistry of Air Conditioning Preview

The chemistry of air conditioning – in C&EN

By |August 22nd, 2017|

Click to view full graphic on the C&EN site

In the heat of summer air conditioning units can help you beat the heat. This month’s edition of Periodic Graphics in C&EN looks at how air conditioning systems work and the changing compounds that help them cool you down! Click through the the C&EN site to view the full graphic.


1508, 2017
  • Ice Cores and Atmospheric History

The science of ice cores: Atmospheric time machines

By |August 15th, 2017|

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We know what global temperatures are like now, from direct measurement around the globe. And we know quite a lot about what temperatures were like over the past few hundred years thanks to written records. But what about further back than that? How do we know what temperatures were like a thousand years ago, or even hundreds of thousands of years ago? There is, of course, no written record that far back in history – but there is a chemical record, hidden in the ice of Antartica and Greenland.


1801, 2017
  • Carbon Dioxide and Ocean Acidification

Ocean Acidification: “The Other Carbon Dioxide Problem”

By |January 18th, 2017|

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Ocean acidification is often referred to as ‘the other carbon dioxide problem’. We’re all quite rightly concerned about the effects that rising atmospheric carbon dioxide levels may have on climate, and the potential consequences of climate change are well documented: more frequent instances of extreme weather, and higher global average temperatures to name but two. Ocean acidification gets comparatively less press, and as such is sometimes misunderstood – but its effects could be equally serious.


501, 2017
  • Fireworks – The Chemistry of their Environmental Effects

The Dark Side of Fireworks – The Chemistry of their Environmental Effects

By |January 5th, 2017|

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Many of us enjoyed watching spectacular fireworks displays to usher in the new year. However, the vibrant colours of fireworks belie the effects that they can have on the environment. With this graphic, we take a look at some of the issues that they can cause.


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