Microwaves are a convenient and energy-efficient way to cook and heat up leftovers instead of using an oven. But when using a microwave, opt for only microwave-safe glass or ceramic containers for food, even if a plastic container is marked "microwave-safe." Plastics with that marking can withstand heat only up to a certain temperature; if you're cooking something on high for an extended period of time, the plastic containers can still lose their shape and could possibly leach chemicals into your food.

ANDREWS MCMEEL SYNDICATION

To help combat climate change and do your part to protect the biodiversity of the planet, plant tree seedlings. If you have land that can accommodate a few dozen tree seedlings, it's an inexpensive act that can eventually lead to impressive results. The best time to plant these seedlings is in the early spring, when the ground has just thawed and it's still cool enough to not "bake" the trees with the hot sun. Cool temps help give seedlings a chance to get rooted, set and strong enough to thrive.

ANDREWS MCMEEL SYNDICATION

A lot of homeowners have no idea how old their windows are and when or if they should be replaced with more energy-efficient ones. There are obvious signs -- drafts, cracks and light streaming through the edges -- that all make for strong reasons to invest in new windows. But if you have single-pane glass windows, they definitely need to be replaced. Single-pane glass offers virtually no insulation, which makes it very inefficient and can drive your heating and cooling costs way up. Replacing those with double- or triple-pane windows will have a major impact on your bills and make the investment worth it in the long run.

ANDREWS MCMEEL SYNDICATION