BROADCASTS.com

b'

In this edition: We discuss whether drug policy is working, why Australia is experiencing megafires, and what can be done about fatbergs.

News: Miscarriage and PTSD, and a remarkable refugee professor \\u2013 We find out how many women experience post-traumatic stress disorder after miscarriage, and learn about the remarkable life of a venerable maths professor.

Is drug policy working? \\u2013 Former government adviser Professor David Nutt tells us how restrictions on tobacco are working, but that hard drugs policies have in some cases made problems worse, and what can be done.

Why is Australia facing megafires? \\u2013 We find out what\\u2019s making Australia\\u2019s wildfires so bad they have become megafires, including the factors involved in their spread and how much climate change might be to blame.

The big, gross problem of fatbergs \\u2013 Huge accumulations of fat and unflushable material can block drains and city sewers, but how do we work out the best way to prevent them and remove them?

This feature is an excerpt from \'Never Lick the Spoon\' \\u2013 a monthly podcast from Imperial\'s Institute for Molecular Science and Engineering.