1. Inside a sewerage treatment plant
2. Science

From turtles that strike as fast as a snake to spiders that protect frogs, explore the relationships that have developed between the unlikeliest of creatures struggling for survival in the Amazon.

In the second part of this two-part special, Catalyst asks - could our food be making us sick - very sick? New research has linked the Western diet to asthma, autism, multiple sclerosis, diabetes, emphysema, cancer, and the list goes on.

Professor Brian Cox travels to Northern Spain, Nepal and the coast of Canada to uncover how the stunning diversity of shapes in our natural world are shadows of the rules that govern the Universe.

Travel deep into the cosmos to witness the most violent impacts in the universe. Collisions so powerful they shake the foundations of space itself, including those that created Earth and the moon.

No Bunsen burners or laboratories here, this is science for everybody, anywhere. Wherever the kids want to take it, in the garden, in the kitchen or in the shed, this is science by kids for kids.

This series drags science out of the classroom and takes experiments outdoors. Each episode is hosted by a different child from anywhere in the world, where they do a number of surprising experiments.

In Romania Steve and the team stay out all night in a hide and have an encounter with a wild wolf that has damaged its leg.

The incredible discoveries scientists are making in the hunt for life in the cosmos may force us to re-evaluate our basic beliefs about where life might exist on - and off - our home planet.

Einstein's Theory of General Relativity is still one of the pillars of modern physics. But 100 years after Einstein's theory, there's something that seems to undermine everything we thought we knew - Dark Energy. This mysterious cosmic force is not only causing our universe to expand, but this expansion is also accelerating. In this film, BBC's Horizon celebrates the anniversary of General Relativity - and looks at the latest experiments to try and understand Dark Energy.

Before man ruled the world, Earth was a land of giants. Count down the biggest beasts of their kind to ever roam the planet in this eye-opening special, and uncover the secret lives of these supersized species.

Mars rovers Spirit and Opportunity have been on one of the greatest adventures of the Space Age. When they touched down on Mars, NASA warned that they weren't expected to last long but instead Spirit lasted six years and Opportunity is still rolling on.

Prepare your tastebuds for some mouth-watering, culinary science. So join Dr Rob as he once again turns the ordinary into the extraordinary.

NASA's new horizons spacecraft will capture the first-ever close-up images and scientific observations of Pluto and its system of large and small moons. In this unprecedented special event, witness one of the great explorations of our time.

Before you see the film, Oddball starring Shane Jacobson, learn the true story about an chicken farmer who trained his dog to protect a wild penguin sanctuary from fox attacks and saved their seaside town.

Tim Shaw, the man they call the street genius, takes us on a road trip to show why things do what they do. He asks which gas-filled weather balloon will give the biggest bang, what happens when water pressure matches up against a steel tank, how many rubber bands can be stretched around a water melon, and which weird rocket fuel will be the most effective. Plus how to quench your thirst - with a chainsaw. (S.2 Ep.4)

On this episode of SCOPE it's all about the technology that's likely to change our lives in the future. From standing desks to skin scanners, we've got it covered on this all new episode.

The Deadly 60 team are back in the Philippines. They visit a shark cleaning station where Steve gets in the water and sees two Thresher Sharks.

Before you see the film, Oddball starring Shane Jacobson, learn the true story about an chicken farmer who trained his dog to protect a wild penguin sanctuary from fox attacks and saved their seaside town.