The growth of the US solar energy industry is impressive, Calhoun and Morris write, but so-called 'soft costs' keep solar prices high in the US, compared to countries like Germany, a champion of solar development.
Krampus will make your children scream. Black Pete may just leave you speechless.
Revelations of US spying on European allies have hurt America's image abroad but won't irreparably damage transatlantic cooperation on intelligence gathering. Here's why.