As both a mom and a doctor I feel like I should be doing something to help make the planet a safer, healthier place in the future.
However, being both a mom and a doctor, I also love the convenience of paper towels and disposable diapers.
So, what do you do that is convenient and earth-friendly?

CFL's in all light fixtures, low-flow shower heads on showers, recycle bin next to garbage can.

low water toilets are nice
when i graduate, most likely buy a hybrid or smart car...for now am recycling by driving my 17 year old vehicle and keeping it in good shape to minimize exhaust and no oil leaks

I use a bokashi bin to compost kitchen waste inside. It's great--you can put any kitchen leftovers in it (vegetables, cooked or raw meat, onions, pizza, cake, whatever) and you sprinkle bokashi bran on top of it (which contains something like pro-biotic bacteria and yeast, which ferments the food so you can bury it directly into the ground, where it turns into soil in another 2 weeks or so). With this and recycling (plastic, paper, tin, aluminum, glass), my 2 person household puts less than a small grocery bag of trash into the landfill every 2 weeks or so. Best of all, the anaerobic nature of the bin means that you can seal it off and actually store it in your kitchen. http://www.leangreenhome.co.uk/bokashi/bokashi-explained/

If you're looking for an easy but more eco alternative to disposable diapers, I recently read about these diapers which can hold either cloth or paper liners--the paper liners can be either be composted (if they're only holding urine) or flushed down the toilet: http://www.gdiapers.com/ Maybe when I have kids I'll try them!

The greenest thing we (used to) do is live within limited financial means. For years my husband and I shared a single car and walked or biked most everywhere. We almost never went on trips requiring long flights. We cooked at home and limited our use of luxury or disposable products out of financial necessity. That chapter of our lives has come to an end and these days we have a lot more money than time. We have a second car now, and travel much more frequently. Not such a good change, I guess.

ETA: we do compost and keep a fruit/vegetable garden. Recycle household waste. All my son's clothes have come from garage sales. But I suspect all of that will be totally undone by the trip to Hawaii I'm planning for December ...

-organic veggies
-dont' eat meat everyday
-free range animals when we eat meat
-recycle
-use reusable garbage bags
-garden for veggies
-try to avoid pesticides..(hard in the south)
-potty train early?? ha ha--some sites will tell you that cloth diapers take a toil as well with all that washing-anyways, as i can barely get the diaper genie bag to the trash can some days I think that cloth diapers was past my overstreched abilities (no diaper services in my city in my very red state...)

in other words, not nearly enough...!

Hmmm. Not sure what the presence or absence of diaper services has to do with politics.

Geothermal heat, CFLs, low water toilets, recycle everything I can, Farmer's market and buy locally when I can. I don't compost mostly b/c roots gross me out, and things growing out of my compost pile gross me out!

We have a hybrid car but that basically balances out my GMC Acadia monster car.

We are looking into solar but it is really expensive...

Composting, CFLs, reusable shopping bags, layering up in winter to keep thermostat down.

Have you tried DuoDiapers from Thirsties? My husband and I work full time, and we love our cloth diapers. Aside from poopies (which needs to be sprayed off=more work), you just throw the diapers in a wash! Really not much more work, and you save the environment and money! We use disposable wipes for poopie, but use cloth for others.

Otherwise
We eat local, mostly organic, and non-industrial, and very infrequently eat meat (which isn't hard when you try to eat non-industrial)
Recycle
Just bought a composter
Grow fruit (so far not very successfully)
Try to limit waste in OR as much as possible without compromising patient care
Read books and watch DVD from the library
Try to buy second hand baby stuff