After going back and forth over this (with a brain slowed down by a severe cold/fever over the weekend), and reading a bunch of papers and websites, I finally submitted my suggestion a short while ago. It is a concrete legislative action based on solid scientific evidence that can have far reaching positive consequences for biodiversity, if only the politicians can muster up the will to stand up to the vested interests lobbying against this action. And it is also one action that doesn't seem to have been submitted by anyone else on this list of suggestions on the Guardian website!
I thought of writing a separate blog post detailing my suggestion, but in the interest of time—and of catching up with other things that have piled up while I've been in bed—I'll defer that, at least for now. Instead, you can read my complete response to the questionnaire below. And please let me know your thoughts.
The United States government (and those of its states, and indeed other G20 nations that haven't done so) must pass laws prohibiting the use of lead in bullets and other "sporting" ammunition and fishing lures. Lead from these sources has become a major environmental pollutant and health hazard, especially for carnivorous/scavenging species like the endangered California Condor, which ingest lead from dead animals short by "sport" hunters, or through bioaccumulation, esp in aquatic food chains. Alternatives are available, but expensive (unless subsidized) for individual hunters, and expensive politically because of vested interests arrayed against any legislative action to get the lead out. Yet, this ought to be a simple, straightforward action that can easily be accomplished within a short period of time, and produce measurable improvements in the status of many wildlife species, including globally endagared ones, that are currently suffering from excessive lead pollution from hunters' guns. The benefits are clear, the costs are clear, and the opposition is also clear on this issue. All that is needed is some political will to act in the interests of biodiversity.