In Science, Nothing Is Ever 100% Proven.

Until Computers And Robots Make Quantum Advances, They Basically Remain Adding Machines: Capable Only Of Doing Things In Which All The Variables Are Controlled And Predictable. Robots Are Bad At Pattern Recognition And Certainly At Common Sense. That's Why Computers Can Beat Humans In Chess But Can't Have Even A Basic Conversation With A Six-year-old.

The Reactors In Japan Are Stable In The Same Way That A Ticking Time Bomb Is Also Stable. It Wouldn't Take Much To Light The Fuse - A 6.6 Earthquake, Like What Happened Today In Japan, A Pipe Break, An Over-pressurized Containment Vessel - Anything Could Set It Off, In Which Case We Would Have Another Chernobyl, Three Times The Magnitude Of A Chernobyl Accident.

If You Take A Look At The Most Fantastic Schemes That Are Considered Impossible: Teleportation, Warp Drive, Parallel Universes, Other Dimensions, Artificial Intelligence, Ray Guns, You Realize That They Can Be Possible If We Advance Technology A Little Bit.

Aging Is Basically The Build-up Of Error: Error At The Genetic Level, Error At The Cellular Level. Cells Normally Repair Themselves; That's Why You Heal When You Get A Cut. But Even The Mechanism Of Repair Eventually Falls Apart.

The Most Likely Possibility, Favored By Current Data, Is That The Universe Will Die In Ice, Not Fire. However, Personally I Believe That Trillions Of Years From Now, We (if We Are Still Around) Will Have The Technology To Leave The Universe, Perhaps In An Interdimensional Life Boat, And Move To A Warmer Universe.