La atmosfera …
Camadas da Atmosfera. As Camadas da Atmosfera Terrestre - Mundo Educação
This would make a gorgeous wedding invitation!
The science of earthquakes is both fascinating and complicated, even in this over-simplified version.
Classical Conversations Cycle 1 Week 20 Resources.
DIY wind anemometer to measure wind speed
How a Hurricane Works.Here's how such a hurricane is born and the climate conditions that feed it. Read more: How a Hurricane Works - Hurricane Irene - Popular Mechanics