Saving money of course! When I used to ride a motorcycle in my twenties, it was fantastic how I could fill the tank for a few bucks and ride for a week or more. When I bought my first car, it was a shock how much more it cost to fuel it up. I'd still love to ride a motorcycle but working in a trauma hospital kind of makes you think twice.
Electric motors are apparently more reliable than gas motors. They are also quieter and thus better for hearing Earth Wind and Fire and U2 on the next road trip!

 Michelle posted recently about how Queen's University's food plan encourages waste because students are charged a set fee for the year, and can eat as much as they want, so they take huge servings at every meal, then throwing out whatever they don't finish because there is no financial cost.  
Solutions? Change the plan at Queens to the one in place at Humber College, where kids pay a set fee at year's beginning, then debit their accounts for every meal they consume during the year, and receive money back at years end - incentive to eat more carefully and not waste. But I suspect there is a profit for Queen's in the way the food plan is currently run....might write them a letter anyhow, just to see if they would consider changing.....don't hold your breath though!

Few years back I noticed one of the upstairs bathrooms is always very cold in the winter  (nothing like a cold toilet seat in the morning to wake you up!) I crawled into the attic to check and noticed the insulation wrapped around the bathroom fan vent pipe had fallen off. I reattached about half of the length of pipe, but ran out of foil tape and never finished that job. Going to get that done this spring! 
Also, there's  bunch of caulking and sealing that I can do in the old part of the house. As part of the basement renovation, going to insulate the basement walls too. 

grew up on a farm where a car was essential to get to town. However we had 1 car for 8 people. I often wonder if 2 person household really needs 2 cars.

Walking home from work great way to get rid of stress after busy day. Also half of built in exercise.

Currently, there is no electricity generated in Canada from geothermal sources. There are many in the USA. Subsurface temperatures in eastern Canada and the prairie provinces are not high enough to support geothermal energy. Geothermal could work in Western Canada but requires extensive drilling to determine the power generation of geothermal reservoirs, and financing currently does not exist either from government or private sources. There is discussion of using already drilled wells from oil and gas exploration to reduce costs. Solar and wind are way ahead at this point as renewable energy sources. 

The movement toward SRI (socially responsible investing) has the potential to be a huge game changer. I credit Jeanette for really pushing this, and we have been investigating SRI for awhile now.

It is a really daunting and challenging task to figure out where to invest your hard earned RRSP (or IRA and 401K for our America friends). How do we do SRI while still getting a good return on investment that will ensure our financial futures? Banks and investing firms know we want SRI and create products that appear to be green focused, but sometimes it's just clever marketing on their part, and upon closer inspection, you find that "green" mutual fund holds a lot of companies that are NOT environmentally friendly. Who to trust? The big bank financial advisor probably isn't the best person,  but some "green" independent investment firms are too new to have a trustworthy track record. 

Personally, I enjoy looking at direct investment in Canadian renewable energy companies, like Brookfield Renewables, Northland Power, Polaris. There are loads of excellent renewable energy companies, but direct ownership of stocks is also riskier since owning a just a few companies in your portfolio doesn't provide anywhere near enough diversification. And who had time or expertise to be a stock picker? I can't even pick the weeds in the garden. 

My feeling is that the best thing is to find a SRI focused investment firm, who is well respected and trusted (I hope these exist!) and go with them.