The Download: a reality check for geoengineering and the science of interoception

This newsletter covers the practical engineering challenges of solar geoengineering and the emerging scientific field of interoception. It also highlights SpaceX's massive market valuation and its acquisition of AI startup Cursor.
Why it matters
Understanding the physical limitations of climate intervention and the biological basis of human health is critical for future policy and medical innovation.
Plus: SpaceX is now valued higher than Amazon.
The content is a factual summary of technological and scientific developments without political framing.
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