John McConnell came up with Earth Day in 1968 and campaigned at UNESCO for it be celebrated during the spring equinox (21 March). But Sen. Gaylord Nelson had planned an Environmental Teach-In to coincide with Arbor Day (22 April) that ended up being promoted as Earth Day 1970 - and here we are.

My review of Anthony Pagden's Beyond States was just published. It is a bit critical due to its nation-centric formula for world federation and lack of engagement with the Earth system crisis - but I nonetheless recommend reading it:
doi.org/10.1177/1360...

My latest publication is now out with Environmental Values. This fruit of a collaboration with Jeremy Bendik-Keymer will be of interest to anyone interested in the disruptive potential of planetary ideas: journals.sagepub.com/doi/abs/10.1... (or you can alternatively DM me if you would like a pdf).

The basic idea is this "we are planetary, we are biospheric, and we are Earthlings – and the politics of humanity will have to adjust to this fast"
From my new blog for the Streit Council on "Planetary Federalism and Union - within the Biosphere - Now" www.streitcouncil.org/post/planeta...

Some books relevant to the subject of "planetary politics" from recent years I would recommend: Rediscovering Earth (Dunker 2020), Planetary Social Thought (Clark & Szerszynski 2021), On the Emergence of an Ecological Class (Latour & Schultz 2022), and One Planet, Many Worlds (Chakrabarty 2023).

I'm pleased to discover that the (art) book Navigating the Planetary (2020) is a really good contribution to the rich, transdisciplinary, and ever more multifarious discourse on "the planetary."

1979 is way more sensible than thinking it was 1988, as many do. But even non-specialists would have understood that global warming was imminent if they read these reports in 1971: