"At this field site, we are very lucky to have two key bioenergy crops growing side-by-side, which is allowing us to make a comparison of their effects on soil carbon and greenhouse gas emissions from the soil, " he told BBC News.

BBC: Measuring bioenergy crops' carbon footprint credentials

The character stuff is so light on its feet that the action scenes seem flat in comparison -- the effects are first-rate, but they're nothing we haven't seen before, and the climactic showdown is a bit heavy-handed (if satisfyingly crunchy).

CNN: Review: 'Iron Man' packs a terrific punch

Their forecast is 3.5% growth in 2013 for the Brazilian economy, given the low base of comparison, more benign international environment and the lagged effects of monetary and fiscal stimuli on investment growth.

FORBES: Worst Might Be Over For Brazil Economy