Bar chart

Transcript

This bar chart compares estimated population, in millions, across five world regions — Africa, America, Asia, Europe and Oceania — at three points in time: 1800, 1900 and 2012.

In 1800, Asia had the largest population at 635 million, followed by Europe at 203 million, Africa at 107 million, America at 31 million, and Oceania at 2 million.

By 1900, all regions had grown. Asia remained largest at 947 million, Europe rose to 408 million, Africa to 133 million, America increased sharply to 156 million, and Oceania to 6 million.

By 2012, growth had accelerated across every region. Asia reached 4,250 million, more than four times its 1900 level. Africa grew to 1,052 million and America to 954 million, both overtaking Europe, which reached 740 million. Oceania, while still the smallest region, grew to 38 million — more than six times its 1900 figure.

Overall, Asia was the largest region throughout the 212-year period and grew the fastest in absolute terms, while Africa and America saw the largest relative increases between 1900 and 2012.

Line chart

Transcript

This line chart shows average monthly temperature, in degrees Celsius, for four cities — Tokyo, New York, Berlin and London — across the twelve months of the year.

Tokyo is the warmest city overall, ranging from a low of 6.9°C in February to a high of 26.5°C in August, with a mild winter and hot summer.

New York has the widest temperature range of the four cities, from -0.2°C in January to 24.8°C in July, reflecting a cold winter and warm summer.

Berlin follows a similar seasonal pattern to New York but with a lower peak, ranging from -0.9°C in January to 18.6°C in July.

London has the mildest and narrowest range of the four cities, from 3.9°C in January to a peak of 17.0°C in July, staying above freezing all year.

All four cities follow the same general seasonal shape — coldest in January or February, warmest in July or August — but Tokyo runs consistently warmer and London consistently milder than the other three.

Area chart

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This area chart tracks the estimated number of nuclear warheads held by the United States and the USSR/Russia from 1945 to 2006.

The United States' stockpile is recorded from 1945, starting at 6 warheads and growing rapidly through the Cold War arms build-up to a peak of 32,040 in 1966. After 1966, the US stockpile gradually declined and then plateaued in the low-to-mid 20,000s through the 1970s and 1980s. Following the end of the Cold War in the early 1990s, the US total fell sharply, dropping from over 21,000 in 1990 to roughly 10,000 by the mid-1990s, where it remained broadly steady through to 2006 (10,104).

The USSR/Russia stockpile is recorded from 1950, starting at just 5 warheads and growing steadily through the 1950s, 60s and 70s. It overtook the US total in the early 1980s and continued climbing to a peak of 45,000 in 1986 — well above the US's historical maximum. From 1986, the Russian stockpile declined steadily year on year, falling to around 16,000 by 2006.

Together, the chart illustrates the Cold War nuclear arms race: the US built up first and peaked in the mid-1960s, the USSR overtook it and peaked twenty years later at a substantially higher level, and both countries reduced their arsenals sharply after the Cold War ended, converging to lower and more comparable totals by the mid-2000s.

Pie chart

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This pie chart shows web browser market share, broken down into six segments: Microsoft Internet Explorer at 56.33%, Chrome at 24.03%, Firefox at 10.38%, Safari at 4.77%, Opera at 0.91%, and Proprietary or Undetectable browsers at 0.2%.

Internet Explorer accounts for more than half of the total share, over twice the combined share of all other named browsers. Chrome is the second largest segment at roughly a quarter of the total, followed by Firefox at just over a tenth. Safari, Opera and the Proprietary/Undetectable category together make up the remaining small slice of the chart, each under 5%.

Stacked bar chart

Transcript

This pie chart shows web browser market share, broken down into six segments: Microsoft Internet Explorer at 56.33%, Chrome at 24.03%, Firefox at 10.38%, Safari at 4.77%, Opera at 0.91%, and Proprietary or Undetectable browsers at 0.2%.

Internet Explorer accounts for more than half of the total share, over twice the combined share of all other named browsers. Chrome is the second largest segment at roughly a quarter of the total, followed by Firefox at just over a tenth. Safari, Opera and the Proprietary/Undetectable category together make up the remaining small slice of the chart, each under 5%.