Mincraft beta world getting corrupted

Ok, so when i make a new world with caves and cliffs experimental on, after many weeks, it just corrupts and a bunch of stuff happens.

1.All beds turn red

2.Clouds come to the ground

3.with show coordinates  on it shows the wrong numbers

4.every nearby animal dies for some reason

5.Double chest split which means EVERYTHING IN THERE IS GONE

6.you freak out because all this stuff happened

7. Game thinks you're high up so water freezes