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Artigos e Livros
Dezembro 2017
Peru
América Central
América do Sul

Nuestra especie entró en grupos pequeños al continente americano a través de Beringia hace 20-15 000 años. Compartió con Siberia Oriental el chamanismo y con él la búsqueda de plantas y hongos alucinógenos y, como consecuencia, el conocimiento detallado de la flora y el continuo interés por experimentar.

Publicação revisada por pares
Agosto 2017
Ucrânia
África
América Central
Ásia
América do Sul

At the present stage of human development, food is one of the most acute problems. Over the past 30-40 years, the growth rate of population in many countries of the world is ahead of the growth rate of agricultural production, which leads to acute shortage of food.

Artigos e Livros
Maio 2017
América Central
América do Sul

Of the countries considering national-level policies for incentivizing reductions in forest-based greenhouse gas emissions (REDD+), some 25 are experiencing (or are emerging from) armed-conflicts.

Artigos e Livros
Maio 2017
Argentina
América Central
América do Sul

The intergovernmental Panel on Climate Change (IPCC, 2012) predicts increases in the frequency of heavy precipitation in the 21st century over many areas of the globe. Thus, climate change will increase flood and drought frequencies, alter stream geomorphology and habitat availability, as well as increase water temperature, sediments, and nutrient concentration (Sabater & Tockner, 2010).

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