MOXIE's first hour on Mars yielded only 5.4 grams of oxygen, but it crossed a larger threshold: another planet had become the source of a useful consumable.
Special relativity allows a massive spacecraft to approach light speed but makes the required energy diverge as velocity approaches c.
The fitness industry's favorite target of 10,000 daily steps may be a myth—at least for older adults, who appear to gain most of mortality's benefits at a considerably lower threshold.
Denmark has quietly built an energy system where most homes don't heat themselves—they tap into a national grid of shared warmth, a model that could reshape how the world thinks about residential heating.
Beneath the forest floor, trees may be trading resources and secrets through fungal networks—but scientists are still feuding over how the system actually works.
A century of better nutrition, healthcare, and living standards has literally reshaped the human body—Spanish women today tower over their great-great-grandmothers by a full hand's width.
The world's fastest-growing mining operation isn't in the ground—it's in our drawers, filled with obsolete phones and computers.
Exponential growth seems harmless until you're obligated to deliver more grain than exists on Earth.
Anxiety about future troubles often arrives before the troubles themselves—and our minds may be the only place they ever exist.
When a soldier-emperor writes philosophy for no audience but himself, a radical idea emerges: tolerance might be the truest form of power.
For two decades, the U.S. government spent millions chasing psychic spies—and accidentally proved that the strangest explanations sometimes fit the facts.
When your job ends, a fundamental part of how you understand yourself can disappear, leaving many retirees stranded between who they were and who they might become.
Researchers discovered an unexpected gift in radioactive fallout: a biological clock precise enough to settle whether adult hearts can regenerate.
What made Sardinian villagers live to 100 wasn't a superfood or secret supplement—it was a life where everyone depended on everyone else, and nobody could afford to stop moving.
Hubble and Webb astrometry caught a star near periastron, allowing a 23-year partial arc to reveal the first individually detected stellar-mass black hole in Omega Centauri.
A 60-million-year reconstruction links sea level to phosphate availability, ocean oxygen and organic carbon burial, with the strongest sink appearing in an intermediate sweet spot.
