How UV Causes Cancer and Aging

UV at ground level is non-ionizing but it damages DNA and causes photoaging – how? Also, it turns out glass doesn’t block all UV (specifically UVA passes through). This is something I learned filming with the UV camera inside. Continue reading

Why do our bodies age? – TED- Ed

 

 

Human bodies aren’t built for extreme aging: our capacity is set at about 90 years. But what does aging really mean, and how does it counteract the body’s efforts to stay alive? Monica Menesini details the nine physiological traits that play a central role in aging.

Lesson by Monica Menesini, animation by Cinematic.

View full lesson: http://ed.ted.com/lessons/why-do-our-…