Learning + Tutorials

Back in the late 1980s, an oral surgeon was in the middle of a two-week raft trip down the Colorado River in the Grand Canyon in Arizona, when disaster struck.

He and two other men were on the bank, getting their 18-foot (5.4-meter) raft ready for a trip down the Crystal Rapids when it got caught in a wave, filled with water and ripped the line from their hands.

We humans can go several weeks without food, but think about it...how well will you function? Have you ever tried fasting for a full day? Two days? Try it.

Headaches, loss of energy, confusion, and lack of focus can all happen within 12 hours of your last meal.

How long can your kids go without eating? Ours can go a whopping 12 minutes...

Earthquakes are rough. They come from out of nowhere and can be extremely serious very quickly.

They often lead to other circumstances: fires quickly spring up from broken gas lines and downed power lines.

And they almost never happen one at a time, aftershocks a commonplace and can be even more damaging than the original quake.