Environmentalist is often a term used to describe impassioned tree huggers but the word literally means someone who studies the environment so environmentalists can be scientists as well. An ecologist studies the environment and an environmentalist wants to save the environment.
NEIL DEGRASSE TYSON: Just in case our human bodies can't live forever, this computer scientist is trying to design virtual replicas, avatars, that will. JASON LEIGH: An avatar is an instance of yourself that's digital, that will never die. NEIL DEGRASSE TYSON: Jason knows he can't really make you live forever, but he can use computers to preserve your thoughts, memories and even the way you look, for eternity.
When you live without any interventions your life expectancy on average is about 82 years. From the age of 50 to 60 onwards you may encounter problems with increased cholesterol, high blood pressure leading to heart attacks and strokes. Coronary artery by-pass surgery may extend an individualâs life by 10 to 15 years.