Aging and longevity

Scientists found that squirrels extract nitrogen from their urea to make proteins.
Charles Q. Choi, Contributor
The genes involved in hydra regeneration and development could offer clues about immortality.
Katharine Gammon, Contributor
Genes for repairing DNA, metabolizing glucose and suppressing inflammation may help some rockfish live for hundreds of years.
Nala Rogers, Staff Writer
Reducing the speed of the already-slow replication process could be a new way to attack the disease.
Haley Weiss, Staff Writer
New research shows inner ear hair cells may be to blame for some types of hearing loss.
Inside Science Contributor
Study attributes age-related hearing loss to hair cells -- the same sense organs that are damaged by loud noises.
Nala Rogers, Staff Writer
Review study examines why people are suffering heart attacks during high intensity and endurance exercises such as marathons and triathlons.
Yuen Yiu, Staff Writer
Mice gene research reveals connection between hair color and immune response.
James Gaines, Contributor
A special imaging technique takes pictures of blood flow under the skin, revealing how and why some elderly suffer poor blood flow.
Catherine Meyers, Staff Writer
A new eye drop may be an alternative to having cataract surgery.
Marsha Lewis, Contributing Producer
New insights may help with new treatments for cataracts and other illnesses.
Katharine Gammon, Contributor
Being active as a child influences how your brain will function as you age.
Karin Heineman, ISTV Executive Producer