• The mystery of the dead galaxies

    Astronomers thought they knew why all galaxies eventually redden and die. They were wrong.

  • A dose of reality

    Does any treatment work against Ebola? Researchers may soon find out, if they can overcome daunting ethical and practical challenges.

  • Saving lives without new drugs

    A push for improving basic care of Ebola patients could save many lives without experimental treatments.

  • The river masters

    Hippos are the nutrient kingpins of Africa's waterways.

  • A glimpse of cosmic dawn

    Astronomers are attempting to look back to when the first stars and galaxies lit up and changed the universe forever.

  • Rare earth

    Soil scientists are tracking down rare and endangered soils in a quest to document—and preserve—“pedodiversity.”

  • Stepping on the gas

    What would it take to put you behind the wheel of a methane-powered vehicle? Researchers are determined to find out.

  • Show me the money

    A bitter dispute lays bare questionable practices in China's foreign-talent programs.

  • Baboon watch

    An epic baboon study shows how social interactions shape health and reproduction in all primates—including humans.

  • The baboon chronicles

    Amboseli researchers have monitored their subjects for 40 years.

  • Don't blame the beetles

    Bark beetles have devastated western forests, but that may not mean more severe fires.

  • Racing the thaw

    Archaeologists scramble to recover artifacts emerging from alpine ice.

  • The littlest patient

    Cutting-edge mouse models fuel hope for understanding and treating cancer.

  • Hope in a mouse

    Selling personalized mouse models to cancer patients, a firm draws thanks and reproach.

  • On the edge

    Ecologist Marten Scheffer became a leader in the science of tipping points by studying lakes. Now he's making waves in many other fields.

  • NOνA's shining moment

    Despite years of delay, Fermilab's massive new experiment has a chance to take the next big step in neutrino physics.

  • No miracles

    Biologist Russell Gray uses evolutionary ideas to probe the origin of languages and complex thinking.

  • Outsmarting the placebo effect

    Can a genetic test to predict a person's level of placebo response help new drugs win approval?

  • Young blood

    Young animals' blood holds rejuvenating powers. Amy Wagers wants to know why.

  • The catalyst

    Marc Lipsitch wants to turn the bitter debate over risky virus research into a search for solutions.

  • A policy morass

    Regulating risky research is getting complicated.

  • In search of Green Arabia

    Researchers are scouring the now-barren Arabian Peninsula to uncover its hidden role in ancient human migration.

  • The cancer drug that almost wasn't

    After years in drug development limbo, a compound that interrupts cell division has revitalized a troubled area of cancer research.

  • The rising toll

    Newly released data reveal that the war in Afghanistan is becoming more dangerous for civilians.

  • Civilian casualties in Afghanistan

    The first release of military data on civilian casualties in Afghanistan is now publicly available.