Is it? In my dayjob I'm solving
technical problems with technical means.
World hunger is not a technical problem. You won't solve it with technical means. If you think you can, you have already lost the fight.
Climate change is not a technical problem. You won't solve it with technical means. If you think you can, you have already lost the fight.
And so on, and so forth. Technical means can help solving certain components needed for the overall solution. These are then technical (sub)problems though. For example, how to store more energy in a battery, or how to grow certain crops with less water. But the overall problems are social in nature. People need to understand that world hunger is a distribution problem. That one is easier to solve with certain (technical) tools available, but that won't be enough. People need to understand that we can't use more natural resources than get replenished. Not a technical problem. If only the tools get better, people will find new ways to be wasteful. Etc etc.