"Alan Gardiner" wrote in message
...

Radio 4 has some good stuff (e.g The Material World). Frontiers this
week (Wednesday 21:00 to 21:30) is all about atmospheric dust and its
impact on climate so it might well be worth a listen.

.... that was broadcast *last* week (17th), but can still be heard here
for 7 days:-

http://www.bbc.co.uk/radio4/science/frontiers.shtml

it is worth listening to, though depending upon your background, not a
lot of 'new' stuff. It mainly outlines the difficulties we already know
on how atmospheric dust acts/reacts with the rest of the 'system'; lots
of doubts and uncertainties!

Martin.