News
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Health & MedicinePeptide puts mouse arthritis out of joint
A compound called vasointestinal peptide, which binds to immune system T cells and macrophages, thwarts arthritis in mice.
By Nathan Seppa -
Dolphins may seek selves in mirror images
Dolphins apparently recognize their own reflections.
By Bruce Bower -
For some birds, Mr. Wrong can be alright
What looks like the ultimate bad choice in romance—a mate from a different species—in some conditions may not be so dumb after all.
By Susan Milius -
AstronomyHave scientists seen planets in the making?
Astronomers may finally have glimpsed a key step in the construction of a planet.