Sees red and scraps conserving energy (5)
I believe the answer is:
rages
'sees red' is the definition.
The answer and definition can be both to do with human feelings as well as being verbs in their -s form.
Perhaps there's an association between them I don't understand?
'scraps conserving energy' is the wordplay.
'scraps' becomes 'rags' (I've seen this before).
'conserving' indicates putting letters inside.
'energy' becomes 'e' (physics symbol as in E=mc2).
'rags' going around 'e' is 'RAGES'.
'and' is the link.
Can you help me to learn more?
(Other definitions for rages that I've seen before include "gives anger vent" , "States of extreme anger" , "Furies" , "becomes furious" , "speaks as Hitler!" .)