News
- Earth
Pieces of a Pulverizer? Sediment fragments may be from killer space rock
Scientists sifting sediments laid down just after Earth's most devastating mass extinction 250 million years ago may have found minuscule fragments of the extraterrestrial object that caused the catastrophe.
- Health & Medicine
Rebuilding the Heart: Marrow cells boost cardiac recovery
Inserting a person's own bone marrow stem cells into an ailing heart via a catheter can improve heart and lung function in such patients.
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- Health & Medicine
Protein may predict heart problems
Low blood concentrations of a protein called adiponectin may signal risk of heart disease.
