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The Download: a new hunt for dark matter and Kenya’s case for going solar

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Why This Matters

The article highlights groundbreaking efforts in the search for dark matter, including innovative detection methods that account for the neutrino fog, signaling a new frontier in astrophysics. Additionally, it showcases Kenya's push towards solar energy adoption, emphasizing its potential to improve energy access and economic prospects in off-grid regions. Both stories underscore technological advancements that have significant implications for scientific discovery and sustainable development.

Key Takeaways

These tiny particles from the sun and other stars can create a “neutrino fog” that drowns out any signal of dark matter. Hitting the neutrino fog does not, however, mean an end to the search. Researchers just have to shift the focus of their hunt.

They’re now casting a much wider net. New proposals include quantum sensors, liquid-helium detectors, and even searches in Jupiter’s atmosphere.

Find out how the search for dark matter has entered entirely new territory.

—Dan Garisto

This story is from the next edition of our magazine, which is all about engineering. Subscribe now to get a copy when it lands!

Entrepreneurs in Nairobi are making the case for going solar

Shops with diesel-powered grain mills are common in Nairobi. Milcah Wanjiru’s is different: it runs on either solar energy or the grid.

About a quarter of Kenya’s population still lacks centralized electricity, and off-grid solar is being promoted as a route to universal access by 2030. In Wanjiru’s case, it cuts operating costs and can improve profits once the upfront investment is recovered.

Read the full story on the rise of solar milling systems across Kenya and beyond.