This week we find out how a species has so successfully infiltrated the verges of the UK road systems. Plus we ask can we create life by heating up basic chemicals...
I understand that the Highways Agency have looked into this (partly as they have to keep on top of vegatation to prevent drains blocking up etc). and appears to be a relatively new phenomenon - with the spread really being noticed in the late 1980's. This may be coupled with improvements in road ice prediction systems (such as the one operated by Vaisala) and more systematic application of grit.
Do motorways create a microclimate?
There is also the well documented effect called "Urban Heat Island". Cities, perhaps due to the large dark colored asphalt area tend to be a couple degrees warmer then the surrounding countryside. CliffordK, Sun, 27th May 2012