Just the one time. Any new ones that are played don’t apply. 

All green and red cards are 1 time effects when you play them. The green cards merely stick around for their tags. The bottom halves of blue cards are 1 time effects as well

Awkwardly, most effects in that game *do* apply going forward

I got that but haven't played it yet haha

hah thanks guys. guess we played it wrong but had fun anyway :)

played the first game yesterday and loved it. im not sure one some of the cards though ie

Cartel
Increase money production 1 step for each earth tag you have, including this.

So does this mean if i get future one it increases them or just all the previous ones?

Terraforming Mars rule clarification