Antibiotic Resistance
The drugs that transformed 20th-century medicine are failing faster than we're replacing them — and routine surgery is among the things at risk.
Science
The empirical evidence, mechanisms, and policy stakes behind the most consequential scientific questions of our time.
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Climate Change
The most thoroughly documented phenomenon in the history of science is also the most politically contested — and the gap between what we know and what we've done about it may define the century.
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GMOs
What the scientific consensus actually says about genetically modified food — and why the public debate has so little to do with it.
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Kessler Syndrome
The debris problem that could lock us out of space forever.
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Methane
The overlooked greenhouse gas that is warming the planet roughly 80 times faster than CO2 in the near term — and whose sources are lying about how much they emit.
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Microplastics
Plastic particles are now in human blood, breast milk, placentas, and Arctic ice — and we don't yet know what that means for health.
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Nuclear Energy
The one large-scale low-carbon power source that terrifies people — and whether the fear has been proportionate to the evidence.
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PFAS / Forever Chemicals
Synthetic compounds engineered to be chemically indestructible are now in the blood of virtually every person on Earth — and the companies that made them knew.
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The Ozone Layer
The clearest environmental success story in history — a global crisis identified by science, met with international cooperation, and actually solved.