This is today's edition of The Download, our weekday newsletter that delivers a daily dose of what's happening in the world of technology.
The Search for Dark Matter Has Been Blown Wide Open
For decades, physicists have hunted for weakly interacting massive particles (WIMPs), a leading candidate for dark matter. But their search has encountered a new challenge: neutrinos.
These tiny particles from the sun and other stars can create a “neutrino fog” that drowns out any dark matter signal. Hitting the neutrino fog does not mark the end of the search, however. Researchers are now shifting their focus and casting a much wider net. New proposals include quantum sensors, liquid-helium detectors, and even searches in Jupiter’s atmosphere.
By 2026, several experimental groups are already testing these innovative approaches. The neutrino fog, once seen as a dead end, has become a catalyst for creative thinking. Instead of refining old techniques, physicists are exploring entirely new ways to detect the invisible matter that makes up most of the universe's mass.
Read more about how the search for dark matter has entered uncharted territory.
—Dan Garisto
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Kenya’s Case for Going Solar
Kenya is making a compelling case for solar energy as a driver of both economic growth and climate resilience. By 2026, the country has already increased its solar capacity by over 40% compared to 2024, driven by falling panel costs and government incentives. Off-grid solar systems now power millions of homes in rural areas, reducing reliance on expensive diesel generators.
But Kenya's solar push goes beyond electrification. The technology is also powering irrigation, cold storage for farmers, and even mobile money kiosks. This decentralized approach is helping communities adapt to increasingly erratic rainfall patterns linked to climate change. The lesson for other developing nations: solar isn't just clean energy—it's a tool for economic empowerment.
Plus: The Pentagon Says It Used Grok in Strikes on Iran
In a controversial development, the Pentagon confirmed this week that it used Grok, an AI decision-support tool, to help plan airstrikes on Iranian targets. Critics worry about the ethical implications of delegating life-or-death decisions to AI, while supporters argue the system reduces collateral damage by processing complex intelligence quickly. As of June 2026, the incident has reignited global debate over autonomous warfare, with several UN member states calling for new treaties to govern military AI.
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