China is committed to renewable energies, but business interests are an obstacle to their development and are driving out foreign companies.

24 may 2010

In 1954, a group of scientists from Bell Labs in New Jersey (USA), famous for discovering the laser and fibre optics, saw how silicon devices, to which the impurities of other metals were added, showed a high sensitivity to light. Then the generating of electricity from sunlight began, from the use of silicon photovoltaic cells. However, the efficiency of current commercial solar panels still exceeds 14%. The good news is that nanotechnology offers new opportunities for a more efficient use of sunlight.

Cristina Jiménez | 26 February 2010

Some people look up to the sky to glimpse what the future holds, others consult a crystal ball. Mariano Marzo looks into the bowels of the Earth. The geologist recently took part in a seminar organized by the Natural Gas Foundation on the energy efficiency situation in Catalonia. He did not do it as a professor of stratigraphy and professor of energy resources of the University of Barcelona, but as part of the Group of Experts on Energy that the Government established in July 2007. His presentation was entitled "Energy efficiency, economic competitiveness and the environment".

Jordi Montaner | 24 February 2010

If anything has become clear after Copenhagen it is the necessity to redesign the global energy system.

14 January 2009

Cristina Jiménez, London