Premiering this week on Link TV - "Adrenaline Junkie," a brand new special episode from the groundbreaking explore series. Follow the explore Team as they make their way from Hawaii to Venice Beach to Jackson Hole, seeking out new adventure sports and learning how rescuers keep thrill seekers safe.

They begin on the North Shore of Oahu, speaking with elite Jet Ski rescue lifeguards at one of the most exciting and dangerous surf breaks in the world. Surfers here catch huge waves, but when something goes wrong every second is a matter of life and death. Specially trained lifeguards navigate the massive waves on Jet Skis to reach those in trouble, and are serious about carrying on the traditions of Hawaiin lifeguards.

The explore team then heads to Venice Beach, California, where a unique organization is providing an opportunity for action sport athletes with physical disabilities to get their fix of adrenaline. Think it's hard to land a backflip or a hand plant on a skate ramp? Kids with the Life Rolls On foundation pull off these tricks in wheelchairs with no sweat.

Next stop is Jackson Hole, Wyoming, where explore accompanies an avalanche rescue team on a heart-pounding mission in the deep powder of Wyoming's Rockies. Rescue workers use an incredible amount of knowledge about avalanches along with the latest technology to find people buried in the snow. Yet as the clock ticks closer to likely suffocation, the noses of their dogs become the best resources in finding victims.

explore is known for travelling to every corner of the globe. The team stays in the United States in this episode and instead journeys deep into the human psyche to discover what leads us some of us to take risks and others to devote their lives to risking everything to save a life. All in all, they explore what makes humans push the boundaries of physics in the never-ending pursuit of adrenaline. Don't miss the West Coast primetime premier on Wednesday at 8pm PST/11pm EST and on Thursday morning at 3am & 9am PST/6am & 12pm EST. Or, watch now online!

Unconfirmed reports have begun to emerge in the past several hours that the two main figures of Iran's Green Movement opposition have been arrested and imprisoned. BBC News and other outlets have relayed word that Mir Hossein Mousavi, Mehdi Karroubi, and their wives were taken from their respective homes, where they had been placed under house arrest, and brought to Heshmatiyeh prison in Tehran.

The original report came from the Kaleme.com website, translated to English by the blogger BanooyeSabz. Both high-profile opposition leaders had been calling for mass demonstrations in Iran in light of the wave of uprisings sweeping the Middle East and North Africa. Mousavi and Karroubi gained international recognition as leaders of the 2009 Green Movement in Iran that was born from protests claiming that the re-election of President Mahmoud Ahmedinejad was flawed. 

Iran's Fars news agency, closely tied to the ruling Revolutionary Guard, quotes an unnamed government official who has denied that Mousavi and Karroubi were arrested. The Guardian UK reports that the two men had been under house arrest for over two weeks, and that their imprisonment could spark mass protests from the oppostion.

These reports come as Iranian Foreign Minister Ali Akbar Salehi held talks Monday with the European Union's Foreign Policy head Catherine Ashton concerning Iran's nuclear program, according to Reuters. Salehi is preparing to address the United Nations disarmament body Tuesday.

There has been much talk in recent days as to possible successors to Egyptian President Hosni Mubarak, if and when he steps down. American and European journalists and pundits have limited the scope of possibilities to those recognizable to Western observers. The first name brought up worldwide was Mohamed ElBaradei, the former head of the United Nations International Atomic Energy Agency and Nobel Laureate. A pro-democracy dissenter for many years, ElBaradei is a recognizable figure to many in the West. However, due to his many years living abroad and current home in Vienna, Austria, he is not well known in much of Egypt. Another favorite figure of the West is Amr Moussa, former Foreign Minister and head of the Arab League.

So which leaders do the Egyptian people actually want? Al Jazeera English posted this video in their live blog today, an interview with a young protester showing his wounds and declaring that he will not leave Tahrir Square until Mubarak steps down. The most interesting part comes halfway through, when he lists three people that he thinks would be good leaders. The Al Jazeera reporter asks the young man who he wants to lead after Mubarak, and what type of government he wants to see. The protester responds, "A government of Egyptians, with the best men here." He lists three names: Mohammed al-Baltagi, Ayman Nour, and Mustashar ("Advisor") Mahmoud al-Khodairy.

These are three very interesting choices, and shine light on the nature of these demonstrations. All three are familiar names in the Egyptian opposition movement, yet are very different people. Dr. Mohammed al-Baltagi is a member of the Muslim Brotherhood party and a Member of Parliament. He has been a vocal supporter of judicial reform in recent years, and has spoken out against the government's decision to bar former British MP and Palestinian activist George Galloway from entering the country.

Ayman Nour is by far the most famous figure of the three that were mentioned. He is the leader of the El Ghad ("Tomorrow") party, a liberal opposition party with a strong focus on democracy and human rights. The Egyptian government officially recognized El Ghad in 2004. Nour, a Member of Parliament at the time, ran for President the next year. He was arrested in January 2005, and then released in March after international outcry and intervention from the European Union. After his release he mounted a presidential campaign that managed to garner seven percent of the vote despite the fact that the elections were widely recognized as being fraudulent. Mubarak then had him arrested again in December, and he served four years in prison before being released in 2009 due to health issues. He joined the protests two weeks ago and was injured when he was hit in the head by a rock on January 28th.

Mahmoud al-Khodairy is a judge and an attorney, a Muslim Brotherhood member who was formerly the vice president of the Egyptian Court of Appeals. Al-Khodairy, referred to here as "Mustashar" (a term of respect meaning "advisor"), was in support of the Muslim Brotherhood's decision to withdraw from the 2010 elections in protest of the ruling National Democratic Party's rigging of election results.

El Ghad and the Muslim Brotherhood would seem to be diametrically opposed, yet this protester would like to see both groups' ideas expressed. After he shows the camera his burns and bruises, he vows not to leave Tahrir Square until he and his peers can decide the future of their country themselves.

(Al Jazeera English: 1715 PST, January 31, 2011) Organizers are gearing up for the largest turnouts yet on the seventh day of demonstrations and marches throughout Egypt. Protesters have flooded the streets almost around the clock since the January 25th "Day of Anger," and one week later tensions are reaching a breaking point. The Egyptian Army today declared that it would not fire on protesters, setting the stage for a culmination of the largest public displays of dissent that the country has ever seen, with the population united in their goal to oust President Hosni Mubarak.

Click here for important background information on the unrest in Egypt.

Watch Al Jazeera English's live broadcast stream, online now.

(Democracy Now! 1330 PST, January 31, 2011) Democracy Now! Senior Producer Sharif Kouddous has arrived in Cairo and is reporting events on the ground by phone. Egyptians called for a general strike today and are organizing millions to take the streets Tuesday. "This is a popular uprising across all segments of society," Kouddous says. "People are so fed up with Mubarak, it's hard to describe. They cursed him, they want him to step down. They will not leave the streets of Cairo, the streets of Egypt, until he does."

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Click here for important background information on the unrest in Egypt. 

Watch Al Jazeera English's live broadcast stream, online now.