Virgin Media Four HD

The largest and most sophisticated radio telescope on the planet, which draws inspiration from geodesic dome designs and the work of 18th-century engineer Jean Marie Jacquard.

Jeremy Wade heads to Thailand in search of the giant freshwater stingray, a terrifying 700lb predator armed with a venomous 10in barb on the end of its whip-like tail.

Aggie MacKenzie meets a woman who must confront the stored belongings of her late parents, and a toy collector who has possibly been sitting on a small fortune.

Barrister Robert Rinder examines more real-life cases, beginning with the 2001 murder of 15-year-old Danielle Jones, who went missing on her way to school.

The murder of a white prisoner by an Asian inmate creates a media frenzy, but local MP Jo Porter is nowhere to be seen. Ashika gets her hands on information that could ruin George.

The women all arrive in Cartagena, Colombia, for the start of their holiday together. Bethenny suffers from an allergic reaction.

In Fiji, fan-favourite Islanders from all over the globe compete once again for the winning accolade and grand prize of $100,000. Hosted by Ariana Madix.

In Fiji, fan-favourite Islanders from all over the globe compete once again for the winning accolade and grand prize of $100,000. Hosted by Ariana Madix.

The eight-time All-Ireland-winner talks about his journey of self-sacrifice, sense of identity, personal tragedy and an insatiable desire for success.

Pawnshop boss James test drives a home-made electric bike, while the Prestige Pawnbrokers team are put to the test when a £30,000 diamond ring arrives with the wrong paperwork.

Dave Myers and Si King ride from Las Vegas to California, making the 'best mashed potato in the world', cooking with marijuana and visiting a taco festival.

Archive news documentary looking back at the headline stories of the past 20 years, focusing this week on 2010.

Archive news documentary looking back at the headline stories of the past 20 years, focusing this week on 2011.

Quiz hosted by Ranvir Singh in which contestants take on Riddlemaster Henry Lewis as they attempt to answer general knowledge questions and confusing conundrums.

Jason Manford hosts the quiz in which contestants aim to find the single 'unbeatable' answer and streak ahead of the rest. Battling it out today are Ryan, Sherina, Richard and Anna.

Gyo, Diego and Leon picks outfits for Leeds fashion student Tasheeka, who then picks one of them to go on a date with.

Renowned hotelier Alex Polizzi helps a couple turn around the fortunes of their B&B in Ross-on-Wye, Herefordshire, which has been subjected to unsuccessful DIY experiments.

The presenter uncovers some of the country's unknown delights, beginning in Sardinia.

Aggie MacKenzie helps two storage hoarders, one who loves designer clothes and another who stored away his furniture after downsizing his home.

John Torode and Lisa Faulkner revisit popular brunch recipes, starting with a takeaway-inspired egg and sausage muffin, and chorizo and broken-yolk smash.

The creation of London's Crossrail network, a project of staggering proportions, with 10,000 personnel working across 40 sites and on 118km of track.

Jeremy Wade swims into the lair of a snakehead, an aggressive Far Eastern predator that has now invaded America, and assesses its reputation as a 'Jack the Ripper' fish.

Aggie MacKenzie helps a lawyer with a serious hoarding problem and a woman who has spent a decade living in Africa and returned to a huge storage bill.

Barrister Robert Rinder examines the case of Claudia Lawrence, a York chef who disappeared in March 2009, and Len Saunders, a 65-year-old actor who was killed in a one-punch attack.

Jo caves under the pressure and turns to drink for relief, leaving Danny to pick up the pieces. Ashika makes some big decisions both on and off the campaign trail.

Bethenny continues to unravel in Cartegena, while the rest of the ladies head out shopping for holiday bargains.

In Fiji, fan-favourite Islanders from all over the globe compete once again for the winning accolade and grand prize of $100,000. Hosted by Ariana Madix.

In Fiji, fan-favourite Islanders from all over the globe compete once again for the winning accolade and grand prize of $100,000. Hosted by Ariana Madix.