Why body feels hot at night ??

  Feeling hot at night because body is trying to cool down  !!!

To prepare for sleep, body widens blood vessels near skin to release internal heat.

This drop in heat makes skin feel warm at night.

Mattresses of synthetic bedding traps body heat instead of letting it escape.

Spicy foods, alcohol and caffeine stimulate sweat glands.

Stress and anxiety increases heart rate and heat.

Taking shower before going to bed and using natural fabrics like cotton and linen optimizes bedding and helps in cooling   !!!

Why are our fingers, different lengths ??

  Different length fingers make the best grip  +  tool hand !!!!

If all fingers were of same length, our hand would be pretty useless !!!

If we try making fist ,  our fingers naturally curl into a curve that matches round things.

Thumb  =  It is a clamp that works against other fingers.

Index  +  Ring  =  They help with  precision and power.

Middle finger  =  Anchor in the centre.

Pinky finger  ≠  It tucks in and adds stability.

This length difference lets the hand to form a power grip.

If.the fingers were equal,  we would just have a paddle  !!!

Our ancestors needed hand for climbing. 

Equal fingers would have made us worse at surviving,making tools etc

World's largest man made island

  This island also holds the Guinness world record for world's largest artificial island .

No... No... It is not in Dubai or China  !!!!

It is so big that over 4,00,000 people live here today.

It is surrounded by 3 freshwater lakes.

Built was started in 1919 and took 67 years to complete.

The goal was simple. Drain parts of north sea inlet. Reclaim the land. Turn open water into farmable and livable ground.

It is FLEVOPOLDER  in NETHERLANDS    !!!

Largest natural satellites of solar system

 The only natural satellite humanity knew was Moon, natural satellite of Earth.

In recent years, more than 800 natural satellites have been discovered. Astronomers haven't yet discovered a moon outside the solar system. 

Here is the list of largest moons of solar system   ------

1.  Ganymede, moon of Jupiter 

2.  Titan , moon of Saturn 

3.  Callisto,  moon of Jupiter 

4.  Io ,  moon of Jupiter 

5.  Moon ,  natural satellite of Earth 

Which countries have " No currency " in the world ???

  When a country don't have official currency, it does not print or manage its own money.

Instead it uses foreign currency for buying and selling things.

Reasons for a country not to have its own currency ---

1.  Countries are very small in size 

2.  Countries want a safe and stable economy.

3.  Priming own currencies is expensive.

4.  Using popular currency makes the trade easier.

Countries that don't have official currency  -----

1.  Vatican city

2.  Monaco

3.  San Marino

4.  Andorra

All these countries use Euro as their currency.

1.  Panama

2. Ecuador 

3.  El Salvador 

All these countries use US dollor as their currency.