is the world getting lighter?

[Steve R]

No.

The world is actually getting heavier due to cosmic dust.

[Guilbert]

Did you know that the actual amount of water on the earth
is fixed, we neither gain nor lose water.

Obviously it can be different things like steam or ice, but the
overall quantity stays the same.

Just think what has happened to the water you drink over all
these years, how many other people have drunk it, how much
of it has been used to flush a loo, or have a bath in.

Not a nice thought.

[Steve R]

True.

I've just drunk a cup of tea that somebody once peed.