Over the past months, our Degrees of Change series has looked at some of the many ways our actions affect the climate, and how our changing climate is affecting us—from the impact of the fashion industry on global emissions to the ways in which coastal communities are adapting to rising tides. But beyond the graphs and figures, how do you get people to actually take action? And are small changes in behavior enough—or is a reshaping of society needed to deal with the climate crisis? Climate journalist Eric Holthaus and Ayana Elizabeth Johnson, founder of the Urban Ocean Lab, talk with Ira about creating a climate revolution, the parallels between the climate crisis and other conversations about social structures like Black Lives Matter, and the challenges of working towards a better future in the midst of the chaos of 2020. Then Matthew Goldberg, a researcher at the Yale Project on Climate Communication, shares some tips for having difficult climate conversations with friends and family.  More than 200 scientists this week wrote a letter to the World Health Organization (WHO), reporting there’s a good chance that COVID-19 can be spread through the air. While the WHO has previously said most transmission happens from direct contact with droplets from an infected person’s cough or sneeze, these experts say the virus can actually stay suspended in the air. If this is true, it’s bad news for people who gather in crowded, poorly ventilated spaces. A lot of questions remain, however, about if this is accurate.  Joining Ira to talk about this story, and more is Nsikan Akpan, a science editor at National Geographic, based in Washington, D.C.