[jonrick46]

I thought of a gamma ray burst too. Such bursts if strong enough from a nearby star, would destroy the earth's protective ozone layer. Without the ozone layer, the Sun's harmful ultraviolet radiation would kill life on the surface and the surface of water. Life as we know it would either cease to exist, or suffer radical chromosomal damage.

If Al Gore and his band of Chicken Littles really wanted to protect life on this planet, they should work on a ozone layer recovery process.

[SatinDoll]

It has already happened here, during the last 41,ooo years. Try reading The Cycle of Cosmic Catastrophes.

Talk about sleepless nights...

[ModelBreaker]

If Al Gore and his band of Chicken Littles really wanted to protect life on this planet, they should work on a ozone layer recovery process.

So many different things could go wrong--asteroids the most likely. The only real protection is to develop a space program that sets up self sustaining human colonies on other planets and, long term, outside the solar system. If the human race spreads out enough, extinction events are much less likely.

Of course, Al and his buds regard humans as a cancer on the Earth. The last thing they want is to have us ruin the rest of the Galaxy also.

[wastedyears]

I agree, we should make the ozone layer very thick.