alumina

Image of diamond anvils compressing molecular hydrogen. Caption and credit: R. Dias and I.F. Silvera

All That Is Shiny May Not Be Metallic Hydrogen

Air-conditioners are everywhere – but how much HFCs are there in the atmosphere? Credit: Pēteris/Flickr, CC BY 2.0

If You’re Celebrating the Kigali Agreement on HFCs, This is Why You Should Stop