And we like to draw these tiles as little squares.

So, these tiles would make a complicated, self assembling checkerboard.

We're going to turn to another technology, called algorithmic self assembly of tiles.

All right? Whereas on the right, the two tiles look nearly the same.

Here is a DNA origami rectangle, and here are some tiles growing from it.

That is your perceptual reality. The physical reality is that those two tiles are the same.

So if you affix some wires and switches to those tiles rather than to the staple strands, you affix them to the tiles then they'll self assemble the somewhat complicated circuits, the demultiplexer circuits, that you need to address this memory.

We have two identical tiles, on the left, one in a dark surround, one in a light surround.

Gone, it seems, is the heyday of T shirts, toys, plastic flowers, tiles, hooks, springs, and the like.

Notice that on the left the two tiles look nearly completely opposite one very white and one very dark.

Here's the DNA origami, and what we can do is we can write 32 on both edges of the DNA origami, and we can now use our watering can and water with tiles, and we can start growing tiles off of that and create a square.

Her crossing the fragmented tiles, faltering at the step to the street, droning, not looking at me, Can you help me?

So, what we've done is we've succeeded in making something much bigger than a DNA origami by combining DNA origami with tiles.

Selections from the series are printed and pasted unto tiles, which are then tacked on to walls and buildings throughout San Juan.

It was started by Erik Winfree, and what it does, it has tiles that are a hundredth the size of a DNA origami.

And we put down those little floor tiles, and then I went onto eBay and bought 150 pounds of Lego which is insane.

Apart from energy efficiency or fuel switch projects, most of the GHG abatement projects in the cement sector involve replacement of a portion of the clinker with mineral by products or residues, which results in a substantial reduction of emissions.

And the point of this, if you didn't catch that, is that tiles are a kind of molecular program and they can output patterns.

So, you can come up with a set of tiles that when they come together, form a little binary counter rather than a checkerboard.

I'm not going to change those tiles at all, but I'm going to reveal the rest of the scene and see what happens to your perception.

You zoom in, there are just four DNA strands and they have little single stranded bits on them that can bind to other tiles, if they match.

But if we use a little computation we use origami, plus some tiles that count then we can get away with using 100, 200 or 300 DNA strands.

I've kept the tiles I've kept the floors I've kept the trunking I've got in some recycled fridges I've got some recycled tills I've got some recycled trolleys.

Those lucky enough to be the first to find one of these tiles and send a picture to Aslan with its location win a copy of the tile for them to keep.

Not finding a way to bring him in because of the multitude, they went up to the housetop, and let him down through the tiles with his cot into the midst before Jesus.

I mean the world where advanced building materials means cement roofing tiles that are made by hand, and where, when you work 10 hours a day, you're still only earning 60 dollars in a month.

She saw right away that the additional tiles that you had to add around the edges was always going to grow by two, so she was very confident about how she made those numbers there.

You can encode the number 32 in the right hand side of a DNA origami, and when you add those tiles that count, they will start to count they will read that 32 and they'll stop at 32.

So, for example, the walls in the Alhambra I can take all of these tiles, and fix them at the yellow place, rotate them by 90 degrees, put them all back down again and they fit perfectly down there.

These are tiles. The word, playful is a necessary aspect of our work because, actually, one of our problems is that we have to make, produce, lovely things throughout all of life, and this for me is now 75 years.

After founding my company, Interface, from scratch in 1973, 36 years ago, to produce carpet tiles in America for the business and institution markets, and shepherding it through start up and survival to prosperity and global dominance in its field, I read Paul Hawken's book, The Ecology of Commerce, the summer of 1994.