Not so much actually. While the Earth is effected by the proximity of hte sun, among other factors that we have no influence on whatsoever, it sis generally agreed upon by most Ecologists and Biologists that we are accelerating these effects with our actions. The Earths systems are balanced on a knife edge basically. We have no idea what upsetting even the tiniest of variables will do. For example, check out what happened in Alaska.
For years, otters were hunted for furs. Finally, they were made endangered after the population was reduced to 10,000 individuals aroudn 1960. Hunting stopped and imediately, the otter population shot back up. Hooray. But suddenly in 1980, the otter population suffered an ncredible decline. Scientists tried for years to find out what the heck was going on, and fianlly realized what had happened about 10 years later, with the otters on the brink of extinction. Apparently, hunting of seals in the area had depleated orca food. With no more seals, the orca's had turned to otters for food. Otters arent very nutritious. It takes about 26 otters to equal the caloric value of one seal. So the orca's ate a lot. They reduced the otter populations from 300,000 to just 6,000 in a few years. Its thought that no more than 10 orca's could have done this.
Thats not even the worst of it. Without otters, sea urchins are exploding, eating lots of kelp forests all over the region. Without these habitats, tons of other species are being displaced. By hunting seals, we have, through a chain of events far out of anything we could have predicted at the time, almost irreversibly changed the habitats of thousands of species. The point is, we dont know what we are fucking up. The effects of our actions, however small they may be, can show up years down the line. We shouldnt be fucking with these factors on such a grand scale.