Catalyst presents science stories from Australia and around the world - meeting scientists at the forefront of discovery, and uncovering innovative breakthroughs that impact our lives however big or small.

Catalyst - Stress And Cancer / Secrets Of Pluto

Researchers may have found a way to prevent the stress induced spread of cancer cells. Guest reporter, oncologist Dr Ranjana Srivastava investigates. Plus we reveal Pluto's secrets with mind boggling pictures. #ABCcatalyst

Catalyst - Toxic Ticks

Do Australian ticks pose a greater health risk than we thought? For the first time, microbes inside native Aussie ticks are being probed, leading to new discoveries which may reveal the causes of unexplained illnesses.

Catalyst - Soundscape / Juno's Mission

The natural world tells unseen stories through sound. Catalyst discovers what we can learn from listening to nature. Plus we go to Australia's tracking station Tidbinbilla to witness Juno going into orbit around Jupiter.

Catalyst - Gaming with Orang-utans / Stormageddon

How are storms changing as the world warms? Plus can orang-utans teach us a thing or two about computer games? #ABCcatalyst

Catalyst - Gut Reaction (Part 1)

Could our food be making us sick - very sick? In the first of a two-part special, Dr Graham Phillips reveals research about the interplay between food and the bacteria deep within our guts. #ABCcatalyst

Catalyst - Gut Reaction (Part 2)

The final part of a Catalyst investigation into whether food could actually be our medicine. A healthy diet could be even more important than previously thought because food affects the bacteria deep inside our guts.