News
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Cloning extends life of cells—and cows?
A study of cloned cows provides reassurance that cloned animals won't die prematurely and may even live extra-long.
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Do oxpeckers help or mostly just freeload?
A textbook example of mutualism—birds that ride around picking ticks off big African mammals—may not be mutually beneficial at all.
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Placebos for depression attract scrutiny
FDA clinical trials suggest that placebos provide substantial relief to depressed patients, but debate continues about whether it's ethical to use placebos in studies of antidepressant drugs.
- Health & Medicine
‘Bubble’ babies thrive on gene therapy
Gene therapy to repair mutations that thwart development of essential immune cells has helped three babies to overcome severe combined immunodeficiency, in which a child is born without a functional immune system.
