TV show availability guide

Catalyst

Catalyst is Australia's premier science investigation series. Each week the team brings you stories from Australia and around the world, meeting scientists at the forefront of discovery.

2014 10 seasons · 164 episodes Returning Series
  • Documentary
  • News

Viewing market

Country-level availability

Where to watch in United States

2 platforms currently listed across all viewing options

Data checked 20 Oct 2026, 10:30 UTC

Free

1
  • Streaming providerPBSNo linked platform guide yetDetails unavailable

Free with ads

1

Series schedule

Seasons and episode dates

A concise series timeline, including the latest aired episode and the next date currently listed.

View TV calendar
First aired
Seasons
10
Episodes
164
Status
Returning Series

Latest aired episode

S23 E6

The Science of Relationships

Aired 52 min

The happiest 50-year-olds are living to be the healthiest 80-year-olds. Their secret? Relationships. Lily Serna explores how to live a healthier and more satisfying life through the science of our social connections.

Next listed episode

No upcoming episode date is currently listed.

Season guide

Most recent seasons first

10 season entries

  • Series 23

    Season 23

    6 episodes

    First episode aired

  • Series 22

    Season 22

    11 episodes

    First episode aired

  • Series 21

    Season 21

    6 episodes

    First episode aired

  • Series 20

    Season 20

    8 episodes

    First episode aired

  • Series 19

    Season 19

    8 episodes

    First episode aired

  • Series 18

    Season 18

    17 episodes

    First episode aired

  • Series 17

    Season 17

    40 episodes

    First episode aired

  • Series 16

    Season 16

    20 episodes

    First episode aired

Show 2 more season entries

  • Series 15

    Season 15

    22 episodes

    First episode aired

  • Season 1

    26 episodes

    First episode aired

About these dates: Air dates describe the series schedule and may change. They do not confirm that an episode is available on the same date from the providers listed above.

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