For many older people, humor can be a lifeline. It's not easy to discuss the challenges of aging—from loneliness and the loss of a loved one to dealing with chronic pain. But laughter can be an invaluable way of opening up about how hard life sometimes feels.

Scientists have used a tiny plastic "obstacle course" to test how much sperm would struggle to navigate during sex in the weightlessness of space.

The fight against widespread burnout in the health care workforce should begin with the training of future health care administrators, according to a new paper from the George Mason University College of Public Health. Published in the Journal of Health Administration Education, the paper examines how health administration programs can better prepare future leaders to address burnout by focusing on workplace factors such as working conditions, leadership support, job design and workload, social connections, and opportunities for advancement.

If you want to know more about how the human brain matures and changes over time, you can now consult the first comprehensive atlas that maps brain organization from infancy all the way through to advanced old age. To create this comprehensive guide, researchers analyzed brain scans from 3,556 healthy individuals, ranging from newborns who were just 16 days old to centenarians. They used a technique called resting-state fMRI to see which parts of the brain communicate with each other while a person is lying still.

Our date of birth doesn't always match the age of our brain. How old our brain really is depends on our biological age, shaped by the wear and tear our cells experience over time. Genetics, environmental factors, and lifestyle choices all play a role in shaping how young or old our body's components are. A biological age higher than your actual chronological age can signal an increased risk of age-related diseases and health problems.