Some People Are A Little Bit Afraid

Cesium, Iodine From The Chernobyl Reactor Accident Went Around The World Many Times And Everyone On The Earth Has A Piece Of Chernobyl In Their Bodies, But It's Very Tiny - Too Small To Cause Much Damage.

I Don't. We've Had Three Technological Revolutions That Have Changed The Course Of Human History, All Driven By Physics. In The First, The Industrial Revolution, Physicists Developed Newtonian Mechanics And Thermodynamics, Which Gave Us The Steam Engine And Machine Power. The Second Technological Revolution Was The Electricity Revolution. That Gave Us Radio, Television, And Telecommunications. Then, Physicists Developed The Laser And The Transistor.

Today, Your Cell Phone Has More Computer Power Than All Of Nasa Back In 1969, When It Placed Two Astronauts On The Moon. Video Games, Which Consume Enormous Amounts Of Computer Power To Simulate 3-d Situations, Use More Computer Power Than Mainframe Computers Of The Previous Decade. The Sony Playstation Of Today, Which Costs $300, Has The Power Of A Military Supercomputer Of 1997, Which Cost Millions Of Dollars.

To Understand The Difficulty Of Predicting The Next 100 Years, We Have To Appreciate The Difficulty That The People Of 1900 Had In Predicting The World Of 2000.

What Is The Universe? The Universe Is A Symphony Of Vibrating Strings...we Are Nothing But Melodies. We Are Nothing But Cosmic Music Played Out On Vibrating Strings And Membranes.