The figure shows the annual global emissions of CO2 from 1960 to the latest available data (Source: World Bank).  CO2 global emissions are expressed in kilo-tons. Globally, in 1960 were emitted about 9 million kilo-tons of CO2. Global emissions have gradually increased over the years. In 2010 CO2 global emissions were over three million kilo-tons, more than three times higher than in 1960.

The figure shows the annual level of CO2 ‘per-capita’ emissions (the CO2 emitted on average by each person) from 1960 to the latest available data (Source: World Bank).  CO2 per-capita emissions are expressed in ‘metric tons.’ In 1960 CO2 emissions amounted to  just over 3 metric tons per capita. The figure has gradually increased over time. In 2010 CO2 per-capita emissions were at 4.9 metric tons (58% more than in 1960).

The figure shows the level of CO2 ‘concentration’ in the atmosphere , a concept well-different from that of CO2 ‘emissions’ in the atmosphere: the first one tell us how much CO2 is accumulated in the atmosphere; the second one tell us the level of CO2 emitted each year. Data refers to the observations made at the ‘ Mauna Loa ’ center in the third week of May in each year (when generally CO2 concentration in the atmosphere reaches its annual peak). In 1974 there were about 333 ‘part per million (ppm)’ of CO2 in the atmosphere; in May 2014 CO2 concentration

The figure shows temperature anomalies (in terms of Degree Celsius, with reference to the 20th century average) from 1970 to the latest available data. Data refer to the month of January in each year (Source: National Oceanic & Atmospheric Administration).  With the exception of some few years, anomalies are always positive and with a growing trend in the latest decades.

The figure shows the levels of Energy per-capita consumption from 1971 to the latest available data ( Source: World Bank). Data are expressed in kg of oil equivalent per capita.  In 1971 Energy use per capita amounted to  1,337 kg of oil equivalent. The value has gradually increased over time. In 2011 the level of Energy use per capita increased to 1,890 kg of Oil equivalent (41% more than in 1971).

The figure shows the trend of the Ecological Footprint (that is, how many hectares each person needs on average to satisfy his needs), Earth’s Biocapacity (the capacity of the Earth to regenerate resources, measured also in hectares) and the ratio between the Ecological Footprint and Earth’s Biocapacity : a ratio higher than ‘1’ means that humanity needs a planet bigger than Earth to satisfy its needs. In 1961 the ratio was 0.63 (humans used less than Earth’s Biocapacity); in 1980 it overcame ‘1’ for the first time. In 2007 the ratio between the Ecological Footprint and Earth’s Biocapacity was

The figure shows  the countries where there are operative nuclear plants.  Data (from IAEA - Internetional Atomic Energy Agency)  refers to December 2014. At that time, there are 438 Operative Nuclear Plants around the world; most of these plnats are in few countries: United States (100; four more compared to 2011), France (58), Japan (48; two more plants than in 2011), Russia (33; one more than in 2011), South Korea (23; two more plants) and China (23, 9 mpre plants than in 2011). Follow India, Canada and Sweden.

The figure shows the trend of the % share of Renewable Energy (excluding hydroelectric) in the production of Electricity. It has gradually increased over the years. It was almost ‘0’ in 1974. In 2011 it reached 4.2%. (Fonte: World Bank)

The figure shows the trend of the global number of refugees from 1960 to 2013 (Source: The UN Refugee Agency - http://www.unhcr.org/pages/4a013eb06.html). An increase in the number of refugees is the result of an increasing state of social instability around the world. In 1960 there were about 1.7 million refugees globally. Over the years the number has increased, reaching its peak in 1990 at just over 17 million of refugees. In 2013 11.7 million refugees were recorded, up from the previous years.