Humans have built roads in some of the most unlikely, remote and dangerous places on the planet. Six celebrities find out what it is like to drive on them.

Friends and comedians Ed Byrne and Andy Parsons brave temperatures as low as -50C to drive across Siberia’s infamous Road of Bones. In Laos and Vietnam Sue Perkins and Liza Tarbuck drive the legendary Ho Chi Minh Trail; a network of dangerous roads carved through mountains and jungles. In the final episode, comedians Hugh Dennis and David Baddiel face 2000km of Ethiopia’s death-defying, bone-shaking roads!

Today there are thought to be as many as 100 million different species on Earth. Wonders of Life tells the story of the amazing diversity and adaptability of these species through the fundamental laws that govern them – light, gravity, time, matter and energy.

Evan Davis presents the popular business ideas contest, and there is a new Dragon in town, as haulage industry expert Hilary Devey joins Peter Jones, Theo Paphitis, Deborah Meaden and Duncan Bannatyne to evaluate pitches from entrepreneurs.

In series 9 some of the standout proposals include a fancy dress venture, an unusual use for a plastic egg, a car that thinks it’s a bike and a Mexican food range. Many visitors to the Den are very particular about their requirements from a potential investor, often with mixed results and when a young businessmen tries for the biggest cash investment ever achieved on the show eyebrows are understandably raised.

More executives are willing to go undercover in their own companies to discover the truth about their staff and the conditions that they work in.

Among the bosses featured in this series are Fouad Haghighat, who goes undercover in his dad’s pizza delivery company Pizza GoGo to discover some shocking safety breaches, empty stores, dangerous working conditions and unanswered cries for help. Many of the 97 franchises are struggling to compete with rival fast food chains, but Fouad is determined to protect his father’s empire.

When Bin Laden was killed by American Special Forces on the 2nd May, 2011, it marked the end of the longest and most expensive manhunt in US history. The 9/11 attacks on New York and the Pentagon had brought Bin Laden to the world’s attention, but the mission to hunt and kill the terrorist leader had begun long before – when he crossed the CIA’s radar in 1991 as a terrorist financier.

Looking at three key phases in the hunt for Bin Laden – the years before 9/11, the run up to the attacks, and the post 9/11 years – Intelligence chiefs, presidents, secretaries of state, the military and operatives on the ground tell their stories – as well as a few of those who met Bin Laden.

Compelling stories from the war in Afghanistan are filmed and told by the soldiers themselves.

Powerful and moving, these three films bring the harsh reality of war to the screens and offer a real insight into the lives and experiences of those on the front line.

Travel inside the human body to investigate the physiological, neurological and psychological changes that happen before, during and after sex. It also illustrates the science of lust and the mechanics of sex itself, and reveals how our bodies get ready for sex both physically and mentally, how male and female orgasms work, and what happens inside the body at the moment of conception itself.