Issue from energy our species consumed (7)
I believe the answer is:
emanate
'issue from' is the definition.
(I've seen this in another clue)
'energy our species consumed' is the wordplay.
'energy' becomes 'e' (physics symbol as in E=mca).
'our species' becomes 'man' (I can't justify this - if you can you should believe this answer much more).
'consumed' becomes 'ate' (to eat is to consume food).
'e'+'man'+'ate'='EMANATE'
Can you help me to learn more?
(Other definitions for emanate that I've seen before include "Send out" , "Come out (of source)" , "Flow or proceed from" , "Give out, emit" , "Issue forth, from a source" .)