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TechThe people’s pulsar
Thousands of volunteers help discover a neutron star by donating the processing power in their idle home computers.
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LifeNew titi monkey, at last
Travel risks in parts of Colombia had kept primatologists out for decades.
By Susan Milius -
Health & MedicineDelivering a knockout
Scientists have finally succeeded in genetically engineering rats.
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Haiti quake reveals previously unknown fault
Scientists say the risk of future temblors in region is unclear.
By Sid Perkins -
LifeHow salmonella helps kill cancer cells
A bacterial foe gives the immune system a boost to seek and destroy melanoma.