The lettuce has got liquid smoke infused into it.

In such a prickly world, no country would dare aggression.

Most people. The one on the left was kept in a fridge for 10 days.

Even mathematicians, who in some sense are the freest of all thinkers, literally couldn't see not only the sea slugs around them, but the lettuce on their plate because lettuces, and all those curly vegetables, they also are embodiments of hyperbolic geometry.

That complicated topic requires a well managed debate and a clear delineation of the steps that will help us understand how to make ecosystem approaches a reality.

Lettuce production methods, including all of the processes from growing to sales, have become much larger in scale during the 20th century.

And so in some sense they literally, they had such a symbolic view of mathematics, they couldn't actually see what was going on on the lettuce in front of them.

In the first years of the 21st century, bagged salad products began to hold a growing portion of the lettuce market, especially in the US.

We have the zone with the sugar palms, and then we have this fence with very thorny palms to keep the orangutans that we provide with a place to live in the middle and the people apart.

And it has two nice fences of tropical hardwood trees you have the shade trees planted in year one, then you underplanted with the sugar palms, and you plant this thorny fence.

As of 2007, 70 percent of the lettuce production in the US came from California in that country it ranks third in produce consumption behind tomatoes and oranges.

The formidable challenge of developing countries is to create sustainable sources of livelihoods in an internationally competitive environment and thereby contribute to the achievement of the MDGs.

Somehow buying a local lettuce, changing a light bulb, driving the speed limit, changing your tires regularly, doesn't seem sufficient in the face of climate crisis.

When our supermarkets have only two or three days' worth of food in them at any one time, often sustainability tends to focus on the energy efficiency of the freezers and on the packaging that the lettuces are wrapped up in.