Title: Cool Earth by Blocking Sun? Scientists Push for Tests.

**Article:** The world is warming dangerously fast. 2024 was the first full year over 1.5°C hotter than pre-industrial times. Emissions continue to rise. Current solutions are falling short. Permanent carbon removal technology only handles a tiny fraction of the necessary billions of tons. While cutting emissions remains essential, experts warn it may not be enough to prevent severe harm. This reality is forcing a difficult question: are there other ways to cool the planet? One idea, first proposed in 1965, is to reflect a small amount of sunlight away from Earth. The planet already reflects about 30% of incoming sunlight. The concept, called solar radiation modification (SRM), aims to slightly increase this percentage to reduce global heating. Proponents argue it could act as a planetary heat shield. They now say it is time to begin safe, controlled experiments to understand if and how it could work.