"Franz Heymann" wrote in message
...
snip
The fact that nature wakes up earlier and earlier in the year is not
because
spring arrives earlier, but a consquence of overall global warming.

There is a natural progression with a period of 18000 years if I remember
correctly, caused by a wobble in the earths rotation which mean that the
seasons really are slowly shifting.

--
Martin & Anna Sykes
( Remove x's when replying )
http://www.users.globalnet.co.uk/~sykesm