OzoNews, Volume XXI, 30 April 2021 issue

In this issue:
1. Kigali Amendment latest ratifications
2. ASHRAE and UN Environment Programme Launch Three-Year Workplan
3. Climate crisis: 2075 could be the year the ocean starts emitting harmful gases
4. COVID-19 and how to establish a sustainable and climate resilient vaccine cold chain - New publication
5. World Refrigeration Day announces theme of 2021 campaign
6. Video: Refrigerant gas sensor detects leaks in diverse applications
7. Harmful chemical still widely used in fridges, air conditioners
8. Doha Municipality invites companies to participate to the "National Survey of substances that deplete the ozone layer and their alternatives"
9. 51st Earth Day Welcomes Unified Recognition of Climate Solutions
10. Moving to net zero may not hurt as much as we think
11. The Refrigerant Policy Landscape: A National Framework Comes into Focus
12. Data center cooled using river water
13. Belarusian scientists design spectral radiometer for space satellites