Numerous Web users in Pakistan reported problems in trying to access YouTube on Sunday evening. When the website returned an hour later, one video had mysteriously disappeared - a clip showing President Asif Ali Zardari shouting "Shut up!" at a rally crowd. Read more and see the video...

An amateur video of the Challenger space shuttle disaster, in which all seven astronauts on board were killed, has emerged 24 years after the disaster. Hitherto unknown of and probably the only amateur footage of the incident in existence, the man behind the clip had kept it his basement until he died in December last year.

Volunteer Kuwaiti divers have been busily cleaning up their country's polluted seabed for nearly a decade, but the debris they remove is not just an old shoe or tyre. Dozens of guns, canons and shells litter the crystal blue waters surrounding the island of Um al-Maradim. Read more...

Lacking support from both voters and politicians in Ukraine's 2010 presidential election, second-place candidate Yulia Tymoshenko has turned to the blue people of "Planet Pandora", ie, James Cameron's imagination, for support. Will the avatars win her the second round on Sunday? Read more and see the unlikely campaign clip...

UK police are hopeful in their search for a group of far-right hooligans who beat up a police officer at an anti-immigration protest in Stoke-on-Trent after an amateur video of the incident was posted on YouTube. Read more and see the clip...

Costa Rica has long been regarded as one of the most politically and economically stable countries in Latin America, but its presidential elections this year seem to have run awry due to a heavy dose of negative campaigning. Voters have never seen a political campaign like it. Read more and watch the videos...

Farmers in the Andes are more than resourceful when it comes to mastering the mountain range's near-impossible terrain. To get from steep hill to steeper hill, they use "garruchas" or "tarabitas" - a prized form of transport in the mountainous regions of Colombia, Ecuador and Venezuela, but not without its design faults. Read more...

Russia's westernmost city staged the biggest anti-Moscow protests in a decade on Sunday. But while similar demonstrations across the rest of the country saw the swift deployment of riot police, in the distant Baltic enclave of Kaliningrad Oblast, the authorities were left helpless in the face of an estimated 10,000 protestors. Read more...

The Iranian ambassador in Paris came face-to-face with anti-government protesters on Sunday, leading to a scuffle and his subsequent restraint by French police. In Iran, the incident went unreported. But the entire affair was caught on camera. Read more and see the footage...

After Venezuela's leading opposition TV channel was forced off the air by the government last Sunday, protests have escalated across the country. Two people have died in the confrontations and many more have been injured. Read more...