Y Chromosome Origins
Researchers have traced the origin of the sex-determining Y chromosome in mammals.
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Young Mouse, Old Mouse
Scientists use blood from young animals to restore the function of damaged tissue in older animals.
Ocean Chemicals
The U.S. has banned some fire retardants because of their toxicity. But the same chemicals are also …
DNA in Amber
Could scientists really get dinosaur DNA from insects preserved in amber?
Fish on Acid
Fish in acidified waters exhibit strange and often reckless behaviors.
Krypton & Ancient Ice
Scientists are using the radioactive properties of krypton to determine the age of Antarctic ice and …
Birds & Elephant Trees
Migratory gray vireos help elephant trees disperse their seeds in Baja, California.
Everest Diabetes Study
Bloodwork from climbers of Mount Everest supports theories about oxygen and Type II diabetes.
Clean Air Act Success
Samples from Greenland's ice cores suggest that the U.S. Clean Air Act has helped curtail acid rain.
Pepper Origins
Researchers trace the origins of pepper domestication to central Mexico.