I haven’t heard a reason, but FYI, the easiest modification is to type a character (I use ~, not sure what else works) and put the link right after, e.g. ~https://www.carbonbrief.org/)
Ridiculous. Lithium is quite a bit better than it’s predecessor (NiMH) both in energy density and in self discharge. If you don’t think there are a ton of scientists looking at battery tech trying for something better and have been for some time, you are not paying attention. The Nova show “In Search of the Superbattery” laid out some promising research on safer lithium batteries and alternatives to lithium for stationary applications (e.g., salt water, flywheel), but for car batteries I am not aware of anything that competes with lithium though of course anything that improves on cost, cycle life, energy density or any objective criteria is always of interest. I read they are working on improving the cycle life for lithium car batteries quite a bit and we may get to see that relatively soon (< 10 years). Many years ago I remember people used to talk about sodium sulfur which needed to be way warmer than room temperature to work correctly - but I don’t hear any of that talk anymore since the modern lithium battery started appearing in cars. If you have an actual piece of technical information that backs up your claim, please share it, otherwise I have to conclude you are too easily taken in by false conspiracy theories.