This episode breaks boundaries by testing the first ever state-of-the-art solar cells in near Space - creating five times more electricity than conventional solar panels.
By using experimental wave powered pumps to bring more life giving water to the surface, it may be possible to restore and enhance phytoplankton production to remove even more CO2 from our atmosphere.
In Melbourne, Australia, one couple takes fuel economy very seriously: they hold 43 world records for fuel economy, including "Longest Distance on a Single Tank." Meet Helen & John Taylor, and find out how they do it.
Architecture critic and writer Paul Goldberger discusses what makes cities such vibrant and livable, and how tomorrow's cities will reflect the past but show us the way to the future in this extended interview from "Earth 2050".
The cost of traffic is time, money, fuel wasted, not to mention the emotional toll and frustration. Could new smart road technology allow us to spend less time in the car, less money on gas, and more time at home?
From the beginning of history, mankind has dreamed of a Utopian civilization. Will a new city, currently under construction in the Arabian desert, fulfill the promise of a perfect city of the future?
The world has close to one billion cars, and the number will double by 2050. That is going to create a huge demand for energy. How do we reduce the amount of carbon emissions we generate? Are there alternatives to petroleum gasoline?
Trees are great carbon absorbers and the Project Earth team tests an ambitious program to replenish the world's forests by planting saplings via a massive helicopter launch system.