Arquivo de Novembro de 2009

Flood Fears

Escrito em 19 de Novembro de 2009 * Sem Comentários

Enviar por e-mail

AUSTRALIA’S HOTTEST SUMMER ON RECORD - 11/2009

Escrito em 19 de Novembro de 2009 * Sem Comentários

Enviar por e-mail

Growth Spurt in Tree Rings Prompts Questions About Climate Change

Escrito em 16 de Novembro de 2009 * Sem Comentários

Anyone who has ever cut down a tree is familiar with the rings radiating out from the center of a tree trunk marking the tree’s age. Careful study of tree rings can offer much more: a rich record of history and indications of concerns for the future

Enviar por e-mail

Is the airborne fraction of anthropogenic CO2 emissions increasing?

Escrito em 13 de Novembro de 2009 * Sem Comentários

Wolfgang Knorr

Department of Earth Sciences, University of Bristol, Bristol, UK

Several recent studies have highlighted the possibility that the oceans and terrestrial ecosystems have started loosing part of their ability to sequester a large proportion of the anthropogenic CO2 emissions

Enviar por e-mail

Zhong Lin (ZL) Wang interview with MaterialsViews.com

Escrito em 13 de Novembro de 2009 * Sem Comentários

Enviar por e-mail

Optical Fiber/Nanowire Hybrid Structures for Efficient Three-Dimensional Dye-Sensitized Solar Cells.

Escrito em 13 de Novembro de 2009 * Sem Comentários

Renewable and green energy are the technological drivers of
the future economy. Solar cells (SCs) are one of the most
important sustainable energy technologies that have the
potential to meet the worlds energy demands.[1] Among the
various approaches to SCs,[2–11] the performance of dyesensitized
solar cells (DSSCs) is largely influenced by the
surface area of adsorbed light-harvesting molecules. Traditional
DSSCs utilize a nanoparticle film for enhancing the SC
conversion efficiency.[12, 13]

Enviar por e-mail

Airborne Nitrogen Affects Aquatic Ecosystem in Alpine Lakes

Escrito em 5 de Novembro de 2009 * Sem Comentários

The impact of airborne nitrogen released from the burning of fossil fuels and widespread use of fertilizers in agriculture is much greater than previously recognized, according to research results published in this week’s issue of the journal Science.

It extends even to remote alpine lakes.

Enviar por e-mail

Top 10 Surprising Results of Global Warming

Escrito em 5 de Novembro de 2009 * Sem Comentários

Have those sneeze attacks and itchy eyes that plague you every spring been worsening in recent years? If so, global warming may be partly to blame. Over the past few decades, more and more Americans have started suffering from seasonal allergies and asthma. Though lifestyle changes and pollution ultimately leave people more vulnerable to the airborne allergens they breathe in, research has shown that the higher carbon dioxide levels and warmer temperatures associated with global warming are also playing a role by prodding plants to bloom earlier and produce more pollen. With more allergens produced earlier, allergy season can last longer. Get those tissues ready.

Enviar por e-mail

Building Tsunami-resistant Cities ( National Science Foundation )

Escrito em 5 de Novembro de 2009 * Sem Comentários

Mary Beth Oshnack describes her undergraduate and graduate research to understand tsunami wave forces and improve building construction in hazard-prone coastal communities

Enviar por e-mail

Environmentally friendly cars are racing across Australia

Escrito em 4 de Novembro de 2009 * Sem Comentários

Enviar por e-mail

Top 10 Places Already Affected by Climate Change

Escrito em 4 de Novembro de 2009 * Sem Comentários

Cities deep underwater, frozen continents, the collapse of global agriculture: so far, much of the discussion about climate change has focused on these distant, catastrophic effects of a superheated world

Enviar por e-mail

— Próxima Página »