Uncategorized

  1. Astronomy

    Watch the oldest surviving film of a total solar eclipse

    A short film of the 1900 total solar eclipse was restored by conservation experts and is now available to view online.

    By Lisa Grossman
  2. Anthropology

    Africa’s first herders spread pastoralism by mating with foragers

    DNA unveils long-ago hookups between early pastoralists and native hunter-gatherers in Africa.

    By Bruce Bower
  3. Health & Medicine

    A fungus weaponized with a spider toxin can kill malaria mosquitoes

    In controlled field experiments in Burkina Faso, a genetically engineered fungus reduced numbers of insecticide-resistant mosquitoes that can carry malaria.

    By Tina Hesman Saey
  4. Chemistry

    Vaping the sweetener sucralose may produce toxic chemicals

    Sucralose in e-liquids can break down, increasing toxic aldehydes in vapors and producing harmful organochlorines, including a potential carcinogen.