World Population Density

Derek  Watkins has a neat little page that lets you slide a slider to see which parts of the world have a particular population density.

via Flowing Data

Airship Photo-gallery

The Telegraph has a nice photo gallery in an article about a huge sale of airship memorabilia.

Lego Math Building

An excellent micro-scale Lego model of the Math Building at the University of Waterloo.

via The Brothers Brick

Photo: Io Over Jupiter

Astronomy Picture of the Day has a nice shot of the moon Io in front of Jupiter.

The Last Swimming Elephant in the Andaman Sea

The Telegraph has a photo gallery about the last sea going elephant in the Andaman Sea.  The elephants and their mahouts used to travel from island to island to do heavy lifting but have now all be replaced by heavy equipment.

Photo: Tungurahua Erupts

Astronomy Picture of the Day has a nice shot of an erupting volcano.