All Stories by Cynthia Graber
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- Health & Medicine
Blood goes stale—and fairly quickly
Doctors have long thought it safe to store donated blood for up to 42 days, but some patients do better when the blood they receive is fewer than 14 days old.
- Animals
Listening to birdsong
Among certain finches, a lady bird knows when a gentleman bird is sending subtle messages in his calls—ones that people can't detect.
