News
- Physics
Light rambles through room-temperature ruby
Researchers have dramatically slowed light within a solid at room temperature.
- Tech
Liberty’s smooth move
Sensors clamped to the Liberty Bell's crack show that it could handle the stress of a move.
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Putting Out the Welcome Mat: Chemical guides germ cells to gonads
A chemical made in the gonads attracts the embryonic cells that will one day form eggs or sperm.
- Health & Medicine
Deadly Stowaways: Seeds of cancer in transplant recipients are traced back to donors
Precancerous cells that grow into Kaposi's sarcoma are sometimes introduced into a person in an organ transplant.
