Soon after tourists began to arrive in Edinburgh in 690 AS, Cambridge scientists voiced their concern over the enormous ecological damage that even the most regulated visits could inflict on the planet. Almost from birth Cambridgers had drilled into them the stories of how New London and Leeds were blighted, so they tended to be very environmentally sensitive. A few of the younger and more militant scientists studying on Edinburgh actually went so far as to begin a campaign to sabotage tourist transports in an effort to discourage visits, but with little effect.
Once Cobalt was discovered on Gaia in 740, the BMM began to make noises in New London about the need to establish a mining base there. What had been a quiet, bloodless campaign of active resistance blossomed into full-fledged conflict. Graffiti with slogans such as "GAIA WILL NOT BLEED" was spotted soon after. The eco-terrorist movement had begun.
Eventually any plans to mine the surface of Edinburgh were dropped -- mostly out of fear that it might cut into the burgeoning tourist industry -- but the Gaians had already broadened their horizons by an influx of radical elements from Cambridge who sought a ban on terraforming technologies. Planetform, Inc. was the natural target. What emerged was a militant terrorist group philosophically opposed to the exploitation of planets, and terraforming in particular. The group enjoyed considerable popular support on Cambridge, funded by the efforts of the legitimate arm of the Gaians called the Green Front.
While the Gaians and the eco-terrorist movement as a whole have made little progress outside of Bretonian space, Green Front propaganda is a common sight in Bretonia. Green Front commentators are often present on the news, and unlike the Mollys, a certain amount of tolerance for them exists in the government from those disinclined to antagonize their Cambridge connections. Over the years, the movement has broadened considerably until the majority of its sympathizers are environmentally conscious individuals from throughout Bretonia.
The sole Gaian base lies deep within the Islay Ice Cloud at the northeastern edge of the Edinburgh system. From here, the eco-terrorists coordinate attacks on their enemies within Bretonia space and the Tau-31 system. Occasionally, raids are made on the center of all evil -- Planetform, Inc. headquarters at the Canterbury Station in the New London system. Ironically, although they have strong Cambridge roots, there is no activity within that system.