It's actually pretty simple. The long-term average temperature changes that have been tracked correlate well with the CO2 changes. On top of that, models of how the Earth's atmosphere responds to CO2 burden are straightforward, and predict the temperature change that is seen. So it's pretty clear that CO2 plays a major role. If you argue with that, then you argue with atmospheric equilibrium models that have been proven over decades. It's a lot of computation, but the physical principles are actually pretty simple. Now, we can argue about what has caused the CO2 increase. Of course, that's not what this topic is about, and it makes little sense to change the topic. By the way, the references quoted above are from the astute-sounding "Nongovernmental International Panel on Climate Change" (NIPCC). Don't be fooled. This group used to call itself the "Heartland Institute", and decided to change it's name to make it sound more auspicious, like a legitimate alternate authority to the established "International Panel on Climate Change" (IPCC), which is a real scientific body involving hundreds of scientists and think tanks. I won't start any arguments, but please don't hesitate to look up the Heartland Institute if you have any inclination to take their stuff seriously. They are, by the way, well funded by Exxon-Mobil and the Koch brothers.

Thanks. Do you know how long the light fixtures usually last? I'm assuming this one is 16 years old, thought it would be cost effective to replace now vs when water in our pool.

Most Coleus are schizo as the amount light varies.

Last year was a very noticeable reduction in insect activity in my garden. Not just pests but beneficial bugs as well. I continue to add plants to the garden that attract Beneficials. I leave all the garden plants intact over the winter to provide shelter in my perennial garden. Over the past 3 years, I've had an amazing reduction in two pests that were causing a lot of destruction of my trees and shrubs and lilies. I have had winter moths every year for probably the past 8 years until this past spring. I suddenly had whole leaves on my trees and no damage to my shrubs at all. I was amazed. And the Lily Leaf Beetle that I normally have to be very attentive to find and remove quickly in the spring, didn't show up at all. Basically foliage with no damage all season. So that was great! But the reduction in bees and wasps etc., was also very noticeable.