Search PBS Space Time


2019-09-16: Could We Terraform Mars?

  • 10:54: Variations are possible - like introducing “super” greenhouse gases like CFCs.

2018-01-24: The End of the Habitable Zone

  • 06:07: There are a few plausible scenarios that give the right levels of greenhouse gases.

2017-03-01: The Treasures of Trappist-1

  • 02:59: ... based on the intensity of its photon flux and the effect of atmospheric greenhouse gases. ...

2016-05-25: Is an Ice Age Coming?

  • 11:22: However, the recent increase in greenhouse gases is so large and so sudden that there's no precedent anywhere in the climate record.
4 result(s) shown.