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This movie is a good demonstration of powers of 10.

An Australian invention shows great promise in extracting water from the air using an efficient windmill and a condenser based on the African stenocara beetle.

Kansai University researchers have developed a “laughing scale”, using the “aH” unit.

This is evidence of wind passing over a mountain range and creating a standing sine wave on the leeward side.

A new game from IBM has a good environmental outcome as players need to save a virtual planet from near ecological doom.

You can check your comments for typos before going ahead and committing them here forever.

A comparison of Google and Yahoo search results refutes the claim that Yahoo draws more younger searchers.

In this Newsletter

1. Changes to the IntMath Newsletter
2. Real life math example – CO2 levels in the atmosphere
3. This month’s math tips – Divisibility
4. Poll Results
5. More from the math blog

String theory suggests that the building blocks of the universe are one-dimensional vibrating strings, rather then zero-dimensional points.

Here’s a satisfactory attempt to model the Earth’s increase in CO2 concentration, using Excel and Scientific Notebook.