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A new type of cement mixes Titanium with the usual lime / alumina compound and heats it up to 1100 degrees Celsius. The resulting compound conducts electricity about as well as other metals at room temperature.

With Titanium in the mix, don’t expect to see this mix in your every day concrete pour. The article mentions a possible application as a substitute material for Indium which is used in plasma TVs and the like. This material is going to find a home inside of an iPod or cell phone probably.

All in all, it reminds me of electrically conducting clay polymers but with the novelty of being made with portland cement.

Alnwick Garden: World’s Largest Tree House via Digg

Photo source:Karen Withak

Alnwick Garden Treehouse Flickr photoset

6,000 sq. feet and includes a restaurant, gift shop and rope suspension bridges / walkways. Future plans include a tree based children’s play area.

Top 12 Skyscrapers of the World via Digg

Not sure if they should count all of these, since over half of them aren’t finished yet. But, if these buildings live up to their renderings, they’ll be extraordinarily cool. Only two of them are located in the U.S. The really outrageously tall ones are in China or Dubai, and the 300 story monstrosity redefines the term pie-in-the-sky.

Marv