There are 10 million Native Americans in the US. Those on reservations are often the last customers on the powerline, getting the worst service at the highest prices. But many tribes are working to fix this, building diverse energy projects on tribal lands that could change their future. With Cheri Smith, CEO of the Alliance for Tribal Clean Energy, and Ken Ahmann, COO of Colusa Indian Energy.

Two veteran pollsters tell us not what they think, but what we think -- Democrats, Republicans and Independents -- about climate, environment and energy. Some of their insights will certainly surprise you. Featuring Ashley Grosse, Executive VP at YouGov, and Alec Tyson, Senior VP at Ipsos Public Affairs, two leading survey and data companies.

Using less energy saves money, and can even reduce prices. It also reduces emissions, and frees up energy for other uses -- without building more powerplants and powerlines. We discuss the benefits to consumers, business and utilities, with Maggie Molina, Executive Director of Northeast Energy Efficiency Partnerships, and Laurie Wiegand- Jackson, CEO of Utility Advantage.

Two very promising PhD candidates discuss their research, federal funding cuts and how they may affect the academic and science environments today and tomorrow, and their job prospects and future careers. With Kelsey Richardson, pursuing her PhD in Chemical Engineering at UC Santa Barbara, and Teagan Reasch, PhD candidate in Energy and Environmental Policy at Ohio State.

The Arctic is warming faster than the rest of the planet. Melting sea ice has opened northern shipping lanes, but exposes more water to the warming sun. Melting land ice raises sea levels. Changing weather can bring cold air south to the rest of us. We'll look at these with research scientists Nancy Fresco from the University of Alaska and Twila Moon from UC Boulder.

Shipping brings us almost every product, because it's the lowest cost of any transport. This makes it extremely important globally, yet it faces many challenges, especially in the US, where the shipbuilding industry has nearly stagnated. We'll hear insider perspectives from Anna Silva, Manager of Cruise Ops at Port Everglades Terminal, and Margaret Doyle, Director of Transparensea Fuels.

In part 1, we learned the basics of the industry. Now we look at CO2 emissions and the UN's goals to reduce them, alternative low-carbon fuels, and challenges to adopt those. We'll hear what effects that might have on the industry, again with expert guests Margaret Doyle, a Director of Transparensea Fuels, and Anna Silva, Manager of Cruise Ops at the Port Everglades Terminal.

Degrowth advocates say we're overusing Earth's resources, which will degrade living standards and harm the environment, so we must reduce. Ecomodernists say we're fine: Technology, agriculture and energy will raise living standards while demanding less of nature. We discuss with Ted Nordhaus, co-founder of Breakthrough Institute, and Josh Farley, an economist from the University of Vermont.