2. Lectures dos ganhadores do Nobel de Economia
3. Fluxograma do sexo na idade média
4. A evolução humana foi mais rápida É somente uma hipótese, ressalta o The Economist
Sobre débitos e créditos da vida real
"In part, it is because stockmarkets are naturally inclined to overreaction. Back in 1999 and 2000 everybody wanted to buy shares in the hottest companies, and were willing to pay the equivalent of 100 years' profits for them, or indeed to buy shares in companies with no immediate prospect of profits at all. That made the value shares look very cheap by comparison and created the conditions for an extended period of catching up.
By the end of 2006 there was a much narrower range of valuations in the market. In other words, investors had to pay less of a premium to buy companies with growing profits. Growth had become cheap by historical standards."
"Brazilian diplomats have been unusually frank in revealing their lack of enthusiasm for the new institution. They fear it may give soft, politically driven loans that go unpaid. Brazil already has its own well-endowed development bank, the BNDES, whose lending of 62.5 billion reais ($37 billion) in the 12 months to September was 50% greater than that of the World Bank in the same period.
The Brazilians have gone along with the project only because they feel they cannot remain outside any new South American institution, especially one with money. But they have worked to limit the bank's remit and to slow its creation.
Mr Chávez can count on the vote of Bolivia and maybe that of Ecuador on the bank's board. But other members are likely to side with Brazil—and so will Chile, Colombia and Peru if they join. So expect a modest outfit that mainly finances cross-border infrastructure."