“Blocking out the Sun is a crime againts humanity!”
Here’s a quick overview of the main concerns critics raise about the UK’s move to research sunlight-blocking (solar geoengineering):
Unintended consequences:
Messing with the atmosphere could accidentally disrupt weather patterns — causing droughts, floods, or changing monsoons in vulnerable regions.
Moral hazard:
Some worry that if governments think there’s a “quick fix” like blocking sunlight, they might slow down real efforts to cut carbon emissions — which are the root cause of climate change.
Lack of global governance:
Critics say decisions about manipulating the whole planet’s climate shouldn’t be made by one country alone. They argue we need international rules before doing any experiments.
Environmental risks:
Aerosols and cloud-seeding could harm ecosystems, ocean life, or even damage the ozone layer if not fully understood.
Ethical concerns:
Some scientists and activists argue it’s simply wrong to deliberately alter Earth’s systems, calling it dangerous hubris (“playing God” with the planet).
Groups like the ETC Group, some climate scientists, and many environmental organizations (like Friends of the Earth) have spoken out against geoengineering research for these reasons.
Friends of the Earth UK:
“Blocking out the Sun is a dangerous distraction from the real work of cutting climate-wrecking fossil fuel emissions. It’s risky, untested, and could have catastrophic impacts on weather systems and food production around the world.”
2. ETC Group (an international environmental watchdog):
“Solar geoengineering is planetary experimentation without consent. It puts the fate of billions of people and ecosystems at risk — and concentrates decision-making power in the hands of a few governments and corporations.”
3. Dr. Raymond Pierrehumbert (Oxford physicist and climate scientist):
“It’s like putting a tourniquet around your neck to stop a nosebleed. You might solve one problem temporarily, but at catastrophic cost.”
4. Professor Joanna Haigh (former co-director, Grantham Institute on Climate Change):
“Once you start trying to block sunlight, you have to keep doing it forever — or else the planet could experience sudden and severe warming.”
A lot of the worry is that even testing small-scale experiments could open the door to future full-scale deployment without truly understanding the risks.