De Broin says the sculpture, called "Superficial," is about a "notion of transparency," and that:

The large stone, tucked away deep in the woods, became a reflective surface for its surroundings. In this play of splintered radiance, the rock disappears in its reflections. Because it reflects one cannot be mislead by its presence, yet we cannot seize it, rather it is the rock that reflects us.

But what about the aliens who are hiding their ship under the cloaking device? What does that have to do with reflecting me?

Here is the model De Broin used to fashion the final, large-scale sculpture. Very mecha and cool.

Michel De Broin [artist's site via Environmental Graffiti]

The beauty of this addition to the tower is that there will be no modification of the existing tower — the observation deck will simply be bolted in place. This is one of the most ambitious temporary modification projects ever undertaken.
Image by Tristan Nitot

Serero Architects main page via Dwell

Designed by architecture firm Brisac Gonzalez, this stadium is dotted with glass bricks backed by colored filters and resembles a cross between the UFO in Close Encounters and the castle walls in some kind of Flash Gordon serial.

Aurillac Stadium [Dezeen]

Seeds that spread on the wind in cities mostly wind up dead on the concrete, while seeds that fall usually find a spot to grow in the same street plots or concrete cracks where their parents grew. (You can see the two kinds of seeds at left.) Because seeds grew up so close to home, the plants evolved super quickly — sort of an urban Galapagos Islands effect. (One of the ways that Darwin first observed natural selection was on a trip past the tiny, isolated Galapagos Islands, each of which had evolved its own unique types of finches that interbred quickly and in isolation from finches on other islands.)

The Proceedings of the National Academy of Sciences published the researchers' study today, noting:

The authors took Crepis sancta seeds from several locations in the city of Montpellier, France, and grew the plants in a greenhouse, observing what fraction of seeds produced were of the light, easily dispersed type. Compared to plants from the countryside, plants from urban patches consistently produced fewer light seeds. Based on a mathematical model of breeding, the researchers estimate that the current version of urban Crepis sancta took approximately 12 years to evolve. They report that plants in a fragmented urban setting thus become doubly isolated, as reduced seed dispersal would likely lower gene flow and hence chances of species survival.

Rapid evolution of C. sancta [PNAS]

This one was placed near the Centre Georges Pompidou in Paris to explain to the aliens that we're really not that complicated of a race. Image by Thierry Depagne Tania Mouraud via Neatorama