Journey through the Solar System to explore the planets, their moons and how they all formed, covering everything from the Big Bang to sunspots, and the wonders of gravity to solar wind. At Iguacu Falls, there is scientific evidence that links the sun's 11 year cycle in activity with the climate here on Earth. There have been some studies done on Paraná River that show the river flow (and thus the rainfall) changes with the sun's activity. In another sequence the program discuss relationship that life on Earth has with sunlight, and how all the plants rely on sun - in the rainforest up in the canopy.