Water:

Summer is approaching, we need to stay hydrated. Why should we be hydrated? How does that help us? How much water should we drink per day? Do we lose water even when we don't notice sweat?

All of the questions answered in the video below:

Attention Procrastinators:

As we are about to be done with our second midterm season, we need to focus on finals (exams, practicals, and assignments) in advance especially because we all like to delay our work and save it until the deadline approaches. We are all procrastinators one way or another. Why do we procrastinate? The video below gives you the ideology of a procrastinators head, but how do we solve this issue? There are a couple of ways of solving this issue:
1) Setting your own deadlines which are way in advance than the real deadlines. This should be constant practice and we should meet our pseudo-deadlines before the real deadlines. We can use a task managing apps like Wunderlist or notes to set these pseudo deadlines. 
2) We can also form study groups with our peers this would help us not to procrastinate and there is a peer pressure to study. 

It may seem a lot of work but remember only by hard work we can reach our goals. Stay focused, study hard, start right now. If you need help please ask.

Procrastination Video:

Sleeping:

At least half of our life we sleep, but most of the college students are sleep deprived. What happens when you are sleep deprived? You lose your memory, you become erratic, your reaction time is slow, and your learning capacity lowers. What happens during sleep that helps us overcome these issues? You will find the reasons and more details in the video below:

Biomimicking:

Artists have been inspired by nature for a long time now, whereas researchers have started appreciating the design of nature very recently. Most living things have perfected themselves over centuries of natural selection and survival of the fittest, where else could we find good design? Biomimicking is a new field where Scientists study designs of living things like insects, jellyfish, and gecko. They use these research on creating devices that would help us in different areas. See the following videos for more information.

Grafting:

Grafting is a process where tissues of plants can be joined to grow together. The possibilities are endless, one can graft an apple branch to a mango tree so that the mango tree can also produce apples. Grafting can be performed with multiple branches of different types of trees all on one tree.

Please see the following video where they have developed (through grafting) one tree which can grow 40 varieties of fruits.

Salt preserving:

Back in the old days when there were no refrigerators to store food people used salt to preserved the food. As the demand for salt has increased, people took up jobs in order to get paid in the form of the salt, hence the name salary has originated. 

How does salt preserve food? In general, when we say we are preserving something, we are trying to keep the food away from microbial growth. When food is kept in a salt solution we have made the surrounding hypertonic to any cell to survive (cells lose water in a hypertonic water and shrivel), hence there won't be any growth of microbes and thus the food in salt will be stored. The same occurs with the sugar, which we use to preserve fruits in the form jams.

For more preserving methods and more information please watch the video:

Space pen:

Can we use regular pens in space? How do we take notes in space considering the gravity is low and regular pens cannot be used? One simple solution is to use pencils, but using pencils have its problems of the pencil lead chipping and getting into some machinery. Hence we developed space pen! Who actually developed space pen? Is it NASA? More details about this and about origin of pens in the video provided: