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Coal-fired power is not only disastrous for climate, it’s also a health hazard, releasing heavy particle emissions, nitrogen oxides and mercury, which contaminates fish in lakes and rivers.

When physicists look for new heavy particles, they assume a fleeting lifetime—the hefty 125 GeV Higgs boson lives for less than a billionth of a trillionth of a second.

Such heavy particles might be cousins of the Higgs boson, or exotic matter particles, or they might be carriers of a new force of nature that works over a short range.

Researchers already knew that, given the right kind of vibrations, bubbles can plunge downwards in liquids, while heavy particles that would normally settle out float to the surface instead.

For example, in a vibrating volume of fluid, gas bubbles can sink and heavy particles can rise1–3.