The first Earth Day on April 22, 1970, was a day set aside to think about creating lifestyles to reduce waste and destruction of our environment.

One of the main messages many of us heard that day was that human life can continue on Earth only if people cooperate with nature. Strides have been made over the past 46 years in cleaning up many rivers and lakes, recycling, protecting natural ecosystems, becoming more aware of hazardous materials, and the list goes on. But we have a long way to go if we are to live in a sustainable way in harmony with nature.

There are things to do and things not to do when it comes to being a good steward of our planet, but one of the best may be to take pleasure in the true beauty of the Earth's ecosystems and its creatures. Too, take time to learn about some of the plants and animals that share the Earth with us. It's just about impossible to destroy something you understand and love.

Throughout the year, and especially April 22, with the wonders of spring all around us, we should make a point to get out and observe. Every forest, wetland and prairie remnant is full of spring signs — evidence that our Earth is designed as a place for life, no matter what foolish acts people may commit.

Jim Gilbert's Nature Notes are heard on WCCO Radio at 7:15 a.m. Sundays. His observations have been part of the Minnesota Weatherguide Environment Calendars since 1977, and he is the author of five books on nature in Minnesota. He taught and worked as a naturalist for 50 years.