• Cosmic convergence

    Neutrinos from beyond our galaxy could be close kin to other mysterious visitors from space.

  • Setting the bar

    As the U.S. military opens ground combat roles to women, it's looking to scientists to help define the standards.

  • New life for old bones

    After a stormy adolescence, the field of ancient DNA enters its golden era.

  • Revolution in human evolution

    As it smashes disciplinary boundaries, ancient DNA is rewriting much of human prehistory.

  • Lost worlds found

    Sugar cubes of buried soil reveal how ecosystems warmed after the last ice age.

  • Prospecting for genetic gold

    Taking advantage of fossils exposed by miners, an evolutionary biologist probes the adaptations of ancient mammals.

  • Breaking a tropical taboo

    Most ancient DNA comes from frigid environs. Can new methods sample hot and humid locales?

  • Protein power

    Paleoproteomics hustles to catch up with its more developed cousin.

  • Means to an end

    Cities, states, and provinces are gearing up to halt their AIDS epidemics—though the definition of success varies.

  • No end in sight

    Tijuana's fractured response to its HIV/AIDS epidemic.

  • Deep sleep

    Boreholes drilled into Earth's crust get a fresh look for nuclear waste disposal.

  • Rolling out a welcome mat for waste

    As feds go looking for somewhere to put nuclear waste, a few willing candidates emerge.

  • 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.

  • 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.

  • The cancer test

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

  • 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.

  • Sage grouse war tests limits of partnership in West

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

  • 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?