While ecologists believe invasive species play a major role in more than 60% of plant and animal extinctions, stopping them in their tracks is almost impossible. Biodiversity reporter Phoebe Weston tells Madeleine Finlay how invasive species spread, ...
A common bacterium usually found in the respiratory system appears to be linked to cognitive decline and Alzheimer's disease when it's present in the retina.
WASHINGTON (AP) - A new kind of pill sharply reduced artery-clogging cholesterol in people who remain at high risk of heart attacks despite taking statins, researchers reported Wednesday.