Our lives are filled with dust: on our desks, under our couches, and in the air we breathe. If we’re very unlucky—like the residents of Laguna Pueblo, New Mexico—it includes uranium blowing off heaps of mining waste. Or the carbon particles carried along by the wood smoke of forest fires. Or microplastics rubbing off car brakes and tires as we screech across the 120 million miles of road in the world. Or a sandy cloud from the Sahara Desert, blowing across the ocean. You get the picture: dust coats the planet, and for the past few centuries, we've been the progenitors of increasing amounts of it. In her book Dust: The Modern World in a Trillion Particles, the London-based writer and researcher Jay Owens argues that we ignore these tiniest byproducts at our own peril, and she demonstrates their consequences in a variety of places: a California lake drained to service LA in the 1930s, the cracked bed of the Aral Sea, icy Greenland, and smog-choked Tudor England.

Go beyond the episode:

• Jay Owens’s Dust: The Modern World in a Trillion Particles
• Sand is a kind of dust—and we’re running out of it
• Jorge Otero-Pailos’s series The Ethics of Dust uses the latex sheets that conservationists use to clean grimy stonework
• John Evelyn’s extraordinary 1661 treatise on air pollution, Fumifugium: or, The inconveniencie of the aer and smoak of London dissipated together with some remedies humbly proposed by J.E. esq. to His Sacred Majestie, and to the Parliament now assembled
• Owens Lake returns

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