[matt4077]

Sure: https://upload.wikimedia.org/wikipedia/en/timeline/bda7c7075...

The problem with CO_2 concentration is that it's a lagging indicator, and that any attempts to lower emissions has to fight against the increased use of energy as economies in Asia and Africa are catching up.

Politics is slow, and there are few mechanisms in international law to enforce treaties. But an international agreement can work, for example by giving politicians arguments ("We're required to do it, because we promised it", "We're not going to lose competitiveness, because everyone is doing it").

Thanks to subsidies, solar and wind power have become cheaper by several orders of magnitude and are now getting close to being competitive with fossil fuels, at least in some regions. Crossing that threshold would obviously be an inflection point.

[nickik]

> Thanks to subsidies, solar and wind power have become cheaper by several orders of magnitude

Subsidies have helped some to create more demand but the idea that they become better by orders of magnitude because of subsidies is absurd and totally against all economic logic.

Those things that had the best development are those things that are already useful anyway.

There are tons of things that got subsidies that never went anywhere.

[candiodari]

Is it lagging 18 years though ? I mean, be serious. Just stop.

And the only slight drop on that graph "just happens", I'm sure, to coincide near-perfectly with the 2008-2009 crisis.

[epmaybe]

There was a climate crisis in 2008-2009?