In the final 6 months of 2015, President Obama took some of his most significant steps in his energy and climate change agenda. He announced the Clean Power Plan to cut carbon emissions. He rejected the Keystone XL Pipeline. He negotiated the Paris Agreement to slow the effects of climate change. President Trump has reversed many of his predecessor's decisions.

Gwen Ifill and the panel talk to voters of the Badger State less than 24 hours after the PBS Newshour Democratic Presidential Debate between HIllary Clinton and Sen. Bernie Sanders. Voters asked the panel about the tone of the 2016 campaign, a lack of substance from the candidates and a potential Bernie Sanders-Donald Trump-Michael Bloomberg match-up in the general election.

On this Webcast Extra, Eamon Javers of CNBC reports on how Wall Street is reacting to the jobs report and speculation the Federal Reserve will hike interest rates in December. Coral Davenport of The New York Times discusses upcoming climate talks in Paris and how these talks may succeed where previous talks failed because the U.S. is bringing new EPA regulations to the table.

After seven years of debate, the Obama administration rejected the proposed Keystone XL pipeline. Obama said the project, which would extend from Canada to Texas, served "no national interest." The New York Times' Coral Davenport explains what's behind the decision. Also on Friday, the October jobs report was released showing over 270,000 jobs added and an unemployment rate down to 5%.

What motivated TransCanada to ask that the review of its Keystone XL pipeline be suspended? And how are environmental groups, who oppose the pipeline, reacting to the request? Gwen Ifill learns more about the domestic and international politics in play from Juliet Eilperin of The Washington Post.

We’re aware of the risk of hacks that result in theft and espionage, but what about a devastating cyberattack on the power grid? In his new book, “Lights Out,” Ted Koppel argues that not only is this a distinct possibility, but that America is totally unprepared. The author joins Gwen Ifill to discuss the frightening potential fallout.

A year ago, crude oil was trading at more than $100 a barrel. Now, the price of oil is down more than 60 percent from its peak. Gwen Ifill speaks to The Wall Street Journal’s Russell Gold to understand the drop and how it affects the U.S. economy.

President Obama laid out new regulations that reset emissions standards for power plants and call for 28 percent of U.S. power to be generated from renewable energy. States, industry groups and politicians pushed back, setting the stage for legal challenges. Gwen Ifill gets views from Environmental Protection Agency Administrator Gina McCarthy and West Virginia Attorney General Patrick Morrisey.

A new Pew Study shows that Republican trust the presidency has never been at a lower point. Meanwhile, Hillary Clinton -citing conflicts from her tenure as secretary of State- dodges questions about whether the controversial Keystone oil pipeline should be built. And House Speaker John Boehner is fighting off a lone Republican congressman trying to remove him from his position of power.

Over months of negotiations at the Iran nuclear talks, several key players are people you've never heard of including the head of the Atomic Energy Organization of Iran Ali Akbar Salehi. David Sanger explains the vital role he played. Plus, Indira Lakshmanan reports on the intense negotiations between Secretary of State John Kerry and his Iranian counterpart Javad Zarif.