How to Measure the Earth’s Radius With Legos

Make sure your angles are in units of radians (not degrees), where 2π radians = 360 degrees. But after that you will get the ...
Purdue University

Purdue scientist adds third dimension to earth beneath our feet

Using computer technology to create three-dimensional models of the earth's mantle, Purdue's Scott King has found evidence that some dramatic features of the earth's surface could be the result of ...
SFGate

Volunteers enhance dimensions of Google Earth 3-D

Peter Sih was 12 years old, newly arrived in the Bay Area from Hong Kong, when he realized he had a knack for drafting. Now 66, Sih, retired from a career at IBM, is one of Google's star "geo-modelers ...
Science Daily

Purdue Scientist Adds Third Dimension To Earth Beneath Our Feet

The swirl of malleable rock in the earth's mantle -- located between the earth's crust and core -- may have greater effect on the earth's surface than was once believed, a Purdue research ...