Surviving outside without anything but a knife is a skill anyone can learn. But it takes practice. Take a look here for infographics about how to survive outdoors, or survival DIY. There’s some cool infographics there, like a former SAS training manual about how to survival outside. Check it out.
Believe it or not, some people claim that tricking your brain to sleep only two hours a day is possible without any negative side effects. This works by forcing your brain to enter REM sleep as soon as you start napping. Scientist say that REM sleep is where you start to feel rejuvinated. This sleep cycle infographic can explain it.
Sleeping five times a day for only twenty minutes will trick your brain into thinking you are sleeping longer hours. I’ve read some blogs about it and people say they didn’t have any negative side-effects. (I’ll try to get some more info). In the meantime, you can check out this Polyphasic Sleep Cycle
It’s often hard to explain to people what textbooks and teachers mean by “The Tree of Life”. As life evolved from single-cell organisms, life became more and more complex. The “branches” of evolution took hold, and different lifeforms began to come about. Excluding the roots, a tree is a great representation of this evolutionary process. Just like on Earth, a tree starts from a seed and grows into many different, complex branches. Each branch can be examples of different paths of the evolutionary process. Each life represents life.
You can find a great representation of the Tree of Life here.