Dusk

Iolo Williams explores Pembrokeshire’s stunning landscape and goes in search of its hidden wildlife spots. This south west corner of Wales is famous for its rugged coastline, off-shore islands and ancient history, but within its borders there are other less well-known locations with great wildlife waiting to be discovered.

In this epic spectacular, the BBC Natural History Unit use a brand new approach to delve deep into the natural world and explore its most critical dimension - time. "24 Hours on Earth" travels moment by moment through a virtual day and celebrates the most extraordinary and spectacular examples of how animals and plants are adapted to exploit the 24-hour cycle. The two-part series features returnable characters that show the huge highs and desperate lows they face across a single day in the wild. It celebrates the most mind-blowing adaptations that life uses to exploit tiny windows of time.

In this epic spectacular, the BBC Natural History Unit use a brand new approach to delve deep into the natural world and explore its most critical dimension - time. "24 Hours on Earth" travels moment by moment through a virtual day and celebrates the most extraordinary and spectacular examples of how animals and plants are adapted to exploit the 24-hour cycle. The two-part series features returnable characters that show the huge highs and desperate lows they face across a single day in the wild. It celebrates the most mind-blowing adaptations that life uses to exploit tiny windows of time.

Documentary following the officers of Britain's biggest and busiest police service as they deal with life, death, crime and its victims, all across the capital.