How To Prevent Disasters

The shuttle Discovery landed safely in California today. NASA says it will not launch another shuttle until it figures out how to keep the insulating foam from falling off the fuel tank. Do you remember when the first 3 or 4 shuttle flights had the painted fuel tank? I wonder if the paint helped keep everything together back then?

To help prevent damage from incoming tidal waves it appears you should plant hibiscus trees. According to University of Hawaii researchers, "[t]hey do a really good job of catching rocks and slowing water[.]"