Time magasine's critique of Earth Hour:
Because climate change is essentially a political problem, and the language of politics is symbolism. Just because an act is symbolic doesn't mean it empty. The only way to truly reduce greenhouse gas emissions, to take the pressure off global warming, is an international regime that puts a cap and a price on climate pollution. And the only way that will happen is if politicians around the world become convinced that climate change is an issue that matters to people, one that will make them change the way they live, buy — and vote.
We risk green fatigue because, after all, what can we do about it? But this is the moment when we need to keep pushing in every way we can. The technologies that will help us decarbonize energy are developing, but they need a push — and that will only happen if we keep climate change near the top of our political agenda. Earth Hour, Earth Day, Earth Year — we'll need it all.