Researchers moving solar geoengineering from models to hardware face a stark reality check. Teams are designing specialized aircraft, aerosols and deployment platforms, but early‑stage trials reveal that cooling the planet would demand extensive new infrastructure, years of testing and billions of dollars. The engineering hurdles suggest that any rollout will be slower and costlier than optimistic forecasts.

Interoception, the body’s internal sense, has entered a rapid growth phase after a 2021 Nobel Prize highlighted its relevance. New imaging tools now map signaling pathways between organs and the brain, giving researchers a clearer view of how internal cues influence metabolism, mood and pain. These insights could reshape treatments for obesity, anxiety and other disorders tied to internal perception.

The daily roundup notes that SpaceX now tops $2.659 trillion in market value, briefly overtaking Microsoft and becoming the fifth‑largest public firm. The rocket maker also agreed to buy AI coding startup Cursor for $60 billion, signaling aggressive expansion into software. These moves underscore how aerospace capital is flowing into artificial‑intelligence ecosystems.

MIT Technology Review also launched a new narrated podcast series, converting its deep‑dive articles into audio for Spotify and Apple Podcasts. Episodes this week cover solar geoengineering, interoception breakthroughs and the SpaceX valuation surge, giving listeners quick access to technical analysis. The platform now offers a daily audio briefing alongside its written newsletter.