31 de março de 2011
Potencial fuga de cérebros
Esta infografia resulta de um inquérito elaborado pela Gallup durante vários anos, a jovens de 148 países, questionando-os acerca de quais os países para onde gostariam de migrar.
Uma lição de Hans Rosling
Quantos litros?
Para juntar aos já conhecidos, descobri hoje mais um autor (Joseph Bergen) que criou um excelente recurso infográfico interactivo, de uma utilidade enormíssima para o ensino da Geografia. Para além de ser um excelente recurso para visualização e exploração, contém também uma proposta didáctica para a abordagem ao consumo e disponibilidade de água.
- Uma proposta didáctica sobre a pegada hídrica relativa a países e a produtos consumidos (vou utilizar no 3º período!!!), intitulada "What is Your Water Footprint?".
- Um painel interactivo para comparação do consumo de água por produtos de diferentes categorias.
World Freedom Atlas
30 de março de 2011
Fusos horários interactivos
Temas urbanos
Postais dos meus alunos
29 de março de 2011
Petróleo-dependentes
Educação Global
Literacia e idade do casamento
Florestas intactas
Uma paisagem da floresta intacta (IFL) é uma extensão ininterrupta dos ecossistemas naturais da zona de extensão florestal actual, não mostrando sinais de actividade humana significativa, e bastante grande para que toda a biodiversidade nativa, incluindo populações viáveis de espécies de ampla distribuição, possa ser ser mantida.
O mapa das "Intact Florest Landscapes" é a primeira avaliação global das grandes áreas de floresta não urbanizado com base em imagens de satélite de alta resolução espacial. O mapa global se baseia em uma série de mapas regionais IFL, que foram produzidas em 2001-2006, utilizando métodos semelhantes, por um grupo de cientistas e organizações ambientais não-governamentais. O uso de um único conjunto de critérios e de fonte de dados nos permitiu produzir um mapa global consistente e estimativas resultam do nível de intacto.
The current extent of the world's forest zone, as defined above, is 55.9 million km2 or 37.3% of the Earth's total land area. IFL comprise 13.1 million km2 or 23.5% of the forest zone.
Most of the IFL consist of closed forests (64.5%), with the remainder spread over open forests and woodlands (20.5%), and non-forest ecosystems (15.0%).
30.8 percent of the world's closed forests remain intact.
The vast majority of IFL are found in two biomes: Humid Tropical and Boreal forests. The lowest proportion of IFL is found in Temperate forests.
IFL exist in 66 of the 149 countries that together make up the forest zone. Most of the world's IFL area is concentrated in a small number of countries - 13 countries contain 90% of the total IFL area, and three of them - Canada, Russia and Brazil - alone contain 63.8% of the world's entire IFL area.
Less then 19% of the world's IFL area has some form of protection, but only 9.7% is strictly protected, i.e. belongs to IUCN categories I-III of protected areas. The protected proportion varies among biomes and countries. The protected portion is greatest in Temperate forests and smallest in Boreal forests, where no more than 4.4% of the IFL area is strictly protected.
Among the continents, the protected proportion is smallest in Asia. Some Asian countries - China, Cambodia, Laos, and Vietnam - have placed little or nothing of their IFL area under protection.
28 de março de 2011
A globalização, segundo Paulo Futre
A eficácia dos recursos alocados à Saúde
Crie gráficos interactivos e dinâmicos
Depois de clicar no link gerado, abre-se uma página com o gráfico obtido a partir dos dados carregados. De cada vez que se pretender carregar novos dados ou alterar os actuais, será necessário repetir todo o processo.
27 de março de 2011
Clima e Energia
This chart is a reproduction of a chart from Edison Electric Institute (EEI) that has been used to suggest that EPA's regulatory timeline is unworkable - see http://www.eei.org/meetings/Meeting%20Documents/EPA-CAAUtilityRegTimelin.... WRI has identified four categories of EPA activities on the EEI timeline that are potentially misleading: (Blue X's) Rules that have been remanded or vacated by court decisions that do not impose compliance obligations. | Download Figure | Data and Citation |
Steel production accounted for nearly 17 percent of China's primary energy use in 2008. Compared to developed countries' steel producers, China's steel sector has much higher primary energy intensity. This higher intensity can be explained by heavy reliance on coal, relatively higher iron alloy production, lower waste energy recovery, smaller scale of equipment, lower conversion efficiency of steam and oxygen, and relatively poor material quality (Huang 2008; Tsinghua Study 2009). | Download Figure | Data and Citation |
A majority of turbines erected in China are small, with 600–850 kW turbines accounting for 80 percent of the market share. In 2006 the average size of turbines in China was 830 kW, compared to 1634 kW in Germany, 1634 kW in the United States, and 1100 kW in Spain. Today, the United States is developing 10 MW turbines, while China just tested 3 MW turbines. | Download Figure | Data and Citation |
Due to constant technological improvement as well as enabling policies, worldwide installed wind power capacity has risen rapidly, from about 14 GW in 1999 to 158 GW in 2009, of which the United States and Germany accounted for approximately 41 percent. The 158 GW installed capacity was estimated to generate 340 terawatthours (TWh) electricity and save 204 million tons of CO2 in 2009 (Sawyer 2010). | Download Figure | Data and Citation |
Coal consistently contributes to over 75 percent of electricity in China (China Bureau of Statistics 2009). To meet its ever growing demands for electricity, China has seen rapid growth of coal-fired power generation. From 2003 to 2009 the country more than doubled its coal-fired generation capacity, making its fleet the largest in the world. However, the fuel consumption per unit of electricity generated during this period has steadily decreased. The use of supercritical/ultrasupercritical technology has significantly contributed to the improvement of energy efficiency. | Download Figure | Data and Citation |
Regulatory Compliance Obligations For the Utility Industry
This chart is an adaptation based upon an original chart from Edison Electric Institute (EEI) - see http://www.eei.org/meetings/Meeting%20Documents/EPA-CAAUtilityRegTimelin.... The original EEI chart has been used to suggest that EPA's regulatory timeline is unworkable. However, as illustrated in http://www.earthtrendsdelivered.org/node/406, the original chart consists mostly of procedural events and activities that will not impose a direct compliance obligation on power plants. This chart shows a more accurate picture of the timeline for new requirements applicable to electric power plants. | Download Figure | Data and Citation |
In the past two decades China has emerged from a technology importer to a major manufacturer of a number of low-carbon technologies. China's government R&D appropriations have increased dramatically, from 43.9 billion Yuan (US$6.8 billion) in 1998 to 254 billion Yuan (US$39 billion) in 2008. Accordingly, three other measures—gross R&D expenditure, R&D intensity, and government science and technology (S&T) appropriations—have also enjoyed rapid growth. | Download Figure | Data and Citation |
26 de março de 2011
25 de março de 2011
Conferência "100 Lições"
A sessão integra-se na iniciativa 100 Lições (Ensino e Cultura) – O contributo formativo e cultural da Universidade, e realiza-se na Sala de Conferências da Reitoria da Universidade de Lisboa, pelas 18h.
Mais informações aqui.
Onde está o centro da Europa?
24 de março de 2011
Se eu vivesse em ...
Os mapas tipográficos estão na moda
"Created as a labor of love, these unique maps accurately depict the streets and highways, parks, neighborhoods, coastlines, and physical features of the city using nothing but type. Only by manually weaving together thousands upon thousands of carefully placed words does the full picture of the city emerge. Every single piece of type was manually placed, a process that took hundreds of hours to complete for each map." Axis Maps