Three-quarters of the land is drying out, 'redefining life on Earth'

Solar desalination and energy costs

• Several comments argue that very cheap solar power will make desalination an affordable large‑scale solution for crops and drinking water, with low sensitivity to power intermittency if paired with reservoirs and/or batteries.
• Others highlight practical constraints: distance between coasts and inland reservoirs, need for new storage, labor and permitting costs, and slow real‑world scaling of large infrastructure projects.
• There is skepticism that mega‑projects will be built without strong state direction, given regulatory and environmental hurdles.

Climate impacts on water, land, and ecosystems

• Drought is framed as more than “less rain”: aquifer drawdown causes irreversible land subsidence and loss of storage capacity; pollutants migrate slowly into groundwater.
• Melting ice affects salinity and large‑scale circulation, with knock‑on effects on climate and water distribution.
• Some stress that urban encroachment on farmland exists but is small compared to climate‑driven land degradation.

Public will, agency, and narratives

• One thread debates whether “people don’t care” about climate:
  • One side sees apathy, short‑termism, and low polling priority, arguing change will come only after severe impacts.
  • Another side calls this a harmful narrative of powerlessness, insisting that belief, hope, and collective action are crucial.

Growth, geoengineering, and lifestyle change

• “Powerdown, permaculture, population control” is proposed as necessary; others argue this window has largely passed and massive geo/bioengineering is inevitable.
• Some say conservation and lower living standards are politically impossible; they favor innovation and geoengineering over deprivation.
• Counterarguments stress that relying on future tech is quasi‑religious and ignores finite physical limits.

Food systems, meat, and agricultural risk

• Multiple comments emphasize livestock’s heavy land use and suggest reduced meat consumption (especially beef) as a high‑impact personal and systemic lever.
• There is a sharp dispute over climate‑driven food risk:
  • Some foresee dramatic yield declines, uninhabitable equatorial regions at ~4°C warming, billions of climate refugees, and heightened war and famine risk.
  • Others argue human adaptability, yield improvements, dietary shifts, and slowing emissions will prevent mass starvation on that scale.

Population, urban form, and energy use

• Population growth is noted as already slowing in many regions; humane “control” is associated with education, income growth, and access to contraception/abortion.
• “Powerdown” is interpreted as using less energy per person via dense, walkable cities and efficient housing, rather than simply having fewer people.

Economics, money, and adaptation

• One side insists “you can’t eat money,” criticizing profit‑driven destruction.
• Another responds that higher productivity and economic resources have sharply reduced deaths from extreme weather and increase resilience.
• Critics reply that economic metrics ignore depletion and damage to underlying material and ecological systems.

Rainfall, aridity, and greening

• A sub‑thread notes that total land precipitation is rising, but higher temperatures drive more evaporation and more intense, less frequent storms, leading many regions to net drying.
• One commenter points out documented global “greening” from CO₂ fertilization, arguing this side of the picture is often omitted; others imply this doesn’t negate growing drought and heat stress.