22 Oct
2007
22 Oct
'07
2:03 a.m.
On Sunday 21 October 2007 19:08:30 Kevin Handy wrote:
This works because the ground below a certain depth is
usually
much cooler than the surface, which is why your grandparents
dug a root cellar to store vegetables and preserves.
That depends on where you are. Once you go 1m down into the soil, it stays at
a pretty steady 14?C in these latitudes (57?N), which is usually warmer than
the surface temperature, except in the middle of summer.
Gordon