Stories by Karen Weintraub

The first rigorous study of aging cloned animals reveals they are perfectly normal

Researchers 3D-print pliable, custom-made graft parts in minutes

Glitches in cells’ mitochondria power plants underlie various types of cases

Patients who received the antibody therapy had reduced levels of amyloid protein in their brains after one year

Copied animals’ long and healthy retirement may breathe life into cloning applications

A study suggests women are more likely to reject men’s corneas, contradicting practice and previous research

Mix of gene manipulation and exercise raises hopes in fight against glaucoma, spinal injury and Alzheimer’s

Cloning has had a bigger impact on science, but a smaller one on human life, than many expected

Scientists use a process developed by bacteria to manipulate RNA  

When it comes to a devastating blood disorder, sometimes two wrongs make a right

A preference for dark versus milk chocolate, among other things, shows up in the kinds of healthy germs found in the gut

A U.K. study links the varying onsets of sexual activity to genes and personality traits

Enhancing the body's own immune system is leading to promising results in the battle against malignancy

Studies offer first hints about how the virus might damage the developing brain and fetus 

Some researchers believe they will soon be able to slow or even stop the body's clock—at least for a little while

Peer counselors are playing a growing role in guiding newcomers to mental health care

Newly recognized, adult ADHD threatens the success and well-being of 4 percent of adults. A combination of treatments can help the afflicted lead a more productive life