I grew up under the spell of London. Illustrator Kerry Lee's evocative 1950 wall map of the city hung above our breakfast table at home in Canada. Over my corn flakes, I traced the capital's high roads and medieval alleys.

When we are away from home, our only constant companion is our self.

One of the most inexplicable characteristics of the Germans is their love of kitsch.

The earliest maps were 'story' maps. Cartographers were artists who mingled knowledge with supposition, memory and fears. Their maps described both landscape and the events, which had taken place within it, enabling travellers to plot a route as well as to experience a story.

I think we're taking a snapshot view of climate change and trying to implement policy based on that snapshot.

Food and the way we grow it and produce it are a major cause of environmental degradation.

For the Navy, developing alternatives to fossil fuels isn't just about fighting climate change - though that's an important side benefit. Biofuels will also play a much more practical role in the Navy's fuel mix, boosting our energy security and supporting the U.S. economy.

If we choose to walk into a forest where a tiger lives, we are taking a chance. If we swim in a river where crocodiles live, we are taking a chance. If we visit the desert or climb a mountain or enter a swamp where snakes have managed to survive, we are taking a chance.