Using an IR led array and some reflective tape, you can track fingers in thin air using the Wii Remote by Johnny Chung Lee, Carnegie Mellon University. The grid software is a custom program written using a C# wiimote library and DirectX.

The earth is running a fever and scientists predict it is going to get much worse. Data from NASA satellites can be used to monitor climate change and study the possible causes.

Prof. James Kakalios added a physics perspective to the movie Watchmen, and explains the quantum mechanics behind the superpowers of Dr. Manhattan. Prof. Kakalios is an expert on the physics of superheroes

Small, crowded apartments are common in Hong Kong, and architect Gary Chang used to live in one of them. Drawing on his own experiences, he created the 'Domestic Transformer' - using sliding panels and walls to morph an apartment into 24 different rooms.

The polar ice caps have been shrinking in summer and expanding in winter for millions of years. But in the last 3 decades, the arctic sea ice at the end of each summer's melt has been getting steadily smaller.