We think that scientists studied everything in this universe but it is not true. There are a lot of things in this universe which need explanation and scientists are fail to give the explanation.
Here are few facts that need a logical explanation.
1.Different types of blood groups
The Strange reality about blood is that it have different types of groups but the scientist has no answers regarding this question that why all humans have different blood group?
According to Freud, dreams are part of human subconscious desires, fears, unsolved problem and childhood experiences and some scientist says, that dreams are meaningless and non-sensical activities of the brain but no one can explain that why we dream and our mind reveal hidden parts of memory in our dreams.