Based on previous discussions on HN, I'm sure there will be plenty of people proposing ambitious and creative technological solutions.
I fear that there's an anthropic bias[0] at work where humans are convinced we will solve this problem because we've always solved other problems before. But we forget that if we hadn't solved those previous issues, we wouldn't be here to talk about it (and it has been very touch-and-go[1] before). That leads us to overestimate our chances of eventually sorting this out, too.
But maybe this is start of the great filter? [2]
[0] https://en.wikipedia.org/wiki/Anthropic_bias
[1] https://io9.gizmodo.com/close-calls-three-times-when-the-hum...