For short I call them red, blue, and green. Reds see the world as full of risks, but none that can't be handled by informed experts and intelligent governance. Global warming is real, but it can be controlled with carbon taxes and regulations. Population growth needs to be subdued with strong family planning programs. Poverty, water scarcity, environmental destruction can all be solved with vigorous bureaucratic measures.
Blues have a cheerier world view.
Risks are small, nature is resilient, the planet is huge, humans are ingenious. All that's needed is for those overbearing reds to get out of the way and let entrepreneurs and new technologies take over. The future promises great abundance, unless we regulate everything to death. Greens think the planet is more fragile than either reds or blues are willing to recognize. They fear that heedless blues, left to their own devices, will run the human economy straight onto the environmental rocks and that the reds are too ponderous, too attached to their own power and privilege to act in time.