Can anyone explain possible solutions to the effect humans have on the Earth and its environment.
I think we all have a choice of whether or not we help or hurt the environment. A person might make things worse by purchasing a larger vehicle than they need that has poor gas mileage. A person might make things better by purchasing a small, hybrid vehicle instead. I think we can all make small changes in our lives that can help the environment. This might be something as simple as recycling or using reusable bags. As larger items wear out and need replacing, we can decide to purchase more efficient models. For instance, our water heater finally broke and we chose to replace it with a far more energy efficient model rather than the same model that we'd had.
The biggest contributors to carbon footprint by individuals are usually housing and transportation. Housing costs the planet because homes need to be heated and cooled, they use lots of hot water, and they contain lots of devices that run on electricity. Anything that lessens any of these items will help - short showers, turning off lights, turning the heat down. Transportation impact can be reduced by using public transportation if it is available, walking, and planning to do errands in groups to save extra trips.
There are a number of good carbon footprint calculators available online. These are interesting to play with because they will allow you to try a variety of "what-if" scenarios to see where your personal impact is coming from and how you can reduce it. Try this one from the Nature Conservancy, or this one from Carbon Footprint in the UK.
Sorry -- computer glitch made me post twice.
The main solution is to stop having so much of an effect. There's not that much we can do to remove the carbon dioxide from the air at this point. What we need to do is to start reducing our emissions so that we can not do further damage.