• The liver's weighty problem

    As obesity rates soar, a sometimes fatal liver disease is becoming epidemic.

  • Of mice and men

    Researchers are adding human DNA to mice to pinpoint sequences that helped define our species.

  • The cancer test

    A nonprofit's effort to replicate 50 top cancer papers is shaking up labs.

  • Mission controller

    How Alan Stern's tenacity, drive, and command got a NASA spacecraft to Pluto.

  • Alan Stern's worldly ventures

    Golden Spike and Uwingu are two of Stern's side efforts.

  • Sage grouse war tests limits of partnership in West

    The prairie chicken could provide a blueprint for settling the sage grouse war.

  • Last dance?

    An urgent effort to save the West's iconic lesser prairie chicken could point the way to a truce in other endangered-species battles.

  • Business decisions

    What does it take for an academic scientist to become an entrepreneur? Here are some of their stories.

  • Give us your best pitch

    Two venture capitalists explain the investor's mindset.

  • Got a startup? Rent a bench

    Biotech incubators such as LabCentral are lowering barriers to entrepreneurship.

  • Making contact

    Some of the last isolated tribes are emerging from Peru's rainforests.

  • The poisoned necklace

    In the 1950s, a visit by a single outsider sickened a band of tribespeople.

  • Mercy on these people, and give us a road

    Will a road through the rainforest bring prosperity or disaster?

  • In peril

    As contacts spike, critics fear that Brazil's once-vaunted protection of isolated tribes is crumbling.

  • How to court an isolated tribe

    "Attractions fronts" lured isolated tribes into contact in the past century, often with disastrous results.

  • Is measles next?

    Some disease fighters want to eradicate the most contagious virus of all. But does a world still fighting polio have the stomach to try?

  • In Vietnam, an anatomy of a measles outbreak

    A mistrust of vaccines, an overburdened hospital, and even the weather conspired to kick off a devastating measles outbreak last year.

  • The drug push

    As fears of drug-resistant bacteria loom, governments try to coax companies back to the field.

  • The new shape of fusion

    After decades of slow progress with doughnut-shaped reactors, magnetic fusion labs are gambling on a redesign.

  • Fidel Castro's first-born son foments a nanotech revolution

    In a Q&A, Fidel Castro Díaz-Balart reveals the truth behind his nom de guerre in Russia and his efforts to launch a nanotechnology R&D center in Havana.

  • Graying Cuba strains socialist safety net

    Cuba's biotech success helped give rise to a rapidly aging population; now, its scientists are hoping to ease the disease burden in the golden years.

  • Cuba's coral Eden

    Scientists rush to study what may be some of the last healthy corals in the Caribbean.

  • In from the cold

    After keeping science alive during decades of scarcity, Cuba's “guerrilla scientists” are ready to rejoin the world.

  • King of the pills

    Raymond Schinazi's handful of lifesaving drugs has earned him riches, esteem, and a dose of enmity.

  • Saving California's calves

    After a half-century of research, scientists find a promising solution to mysterious abortions in beef cattle.