Cynthia Graber

All Stories by Cynthia Graber

  1. Tech

    Lighting goes digital

    Brighter and more efficient, LED lights are on the horizon.

  2. 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.

  3. 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.