Lorry carrying cold drink that's reportedly getting warmer? (6,5)
I believe the answer is:
arctic ocean
'reportedly getting warmer?' is the definition.
(reference to climate change)
'lorry carrying cold drink' is the wordplay.
'lorry' becomes 'artic' (articulated lorry is a semi-trailer truck).
'carrying' is an insertion indicator.
'cold' becomes 'c' (eg on taps).
'drink' becomes 'ocean' ('the drink' is an informal term for the sea**).
'artic' placed around 'c' is 'arctic'.
'arctic'+'ocean'='ARCTIC OCEAN'
'that's' is the link.
(Other definitions for arctic ocean that I've seen before include "Northern expanse of water" , "Cold sea" .)