News

  1. Earth

    Warm Spell: Arctic algae record shift in climate

    Analyses of sediment samples taken from remote arctic lakes indicate that the climate across large swaths of the Northern Hemisphere has been warming for many decades.

    By Sid Perkins
  2. Health & Medicine

    Measuring HIV’s Cost: Treatment adds years, but many still miss out

    Medical care for people infected with HIV has already saved about 2 million years of life in the United States, but more than 200,000 HIV-infected Americans are not benefiting from drugs that could extend their lives.

    By Ben Harder
  3. Physics

    Brutal Bubbles: Collapsing orbs rip apart atoms

    Spikes of heat and pressure in sonoluminescence caused by the implosions of light-emitting bubbles in liquids can strip atoms of electrons.