Last Clue

[kamitoot]

24a.c. Man's environment is as part of Earth is running out of time. i have I?I?H ?E?

[Toorak]

Irish Sea

Anagram of is earth is minus t

[Toorak]

Man refers to Isle of Man

[aelmpvw]

irish sea

[kamitoot]

Thanks everyone. Happy to accept the answer but defeated trying to work out what the clue means!

[Baldric]

I?H ?E? = Irish Sea, yeah ok!

[Toorak]

Earth is with is (as part of) running - anagram indicator - out of time (take t out of earth before angramming)

Man’s environment is where (isle of) man is located

[pixie374]

Was on 2 lines, Baldric, although it is a bit off-putting.

[fiction-factory]

Baldric- on my screen it says ""i have I?I?H ?E?"

[Toorak]

Only on one line on my screen