The things that happen are an earthquake, another bomb in Iraq, some big jolt on Wall Street in oil prices, and then you have some new study on drought patterns from climate change. Or another little incremental improvement in photovoltaics. Where do those fit in to the daily stream? They don't.

The aspects of global warming that matter most to people - how rapidly will the seas rise? Are hurricanes already getting stronger? How strong will they get as a result of warming? Those are still immersed in complexity. So in those realms that catch people's attention most, or that get used as symbols by environmental campaigners, those facets really do come with significant back-and-forthing.

Probably the single-most concrete and substantive thing an American, young American, could do to lower our carbon footprint is not turning off the lights or driving a Prius, it's having fewer kids...we'll soon see a market in baby-avoidance carbon credits similar to efforts to sell CO2 credits for avoiding deforestation.

The survey of more than 100 waterways downstream from treatment plants and animal feedlots in 30 states found minute amounts of dozens of antibiotics, hormones, pain relievers, cough suppressants, disinfectants and other products. It is not known whether they are harmful to plants, animals or people. The findings were released yesterday on the Web site of the United States Geological Survey, which conducted the research, and in an online journal, Environmental Science and Technology.

Every time someone reads a story about the politics poisoning the global warming stuff it makes it feel like a political story, meaning it's Us and Them, instead of what it is: this profound challenge we face given our energy norms right now, the fuels of convenience toward something new. No matter what the politics are, it's still an enormous transformation that has to take place.

We're an amazingly adaptive and resilient species. Once we put our mind to global warming, I have no doubt we'll figure a way through here that won't lead to utter calamity.

I'm trying mostly to ask questions. And not just trying to stake out a position on something, but also trying to define the stuff we agree on. I'm having battles with comment posters trying to insert a little sense of order so it's not just a long pissing match between the edges, which is what I think a lot of the blogosphere is tending to do.