More from Wikipedia:

"Nuclear issues — Nuclear fallout • Nuclear meltdown • Nuclear power • Nuclear weapons • Nuclear and radiation accidents • Nuclear safety • High-level radioactive waste management.

Overpopulation — Burial • Water crisis • Overpopulation in companion animals • Tragedy of the commons

Ozone depletion — CFC

Pollution — Environmental impact of the coal industry • Nonpoint source pollution • Point source pollution • Light pollution • Noise pollution • Visual pollution

Water pollution — Environmental impact of the coal industry • Acid rain • Eutrophication • Marine pollution • Ocean dumping • Oil spills • Thermal pollution • Urban runoff • Water crisis • Marine debris • Microplastics • Ocean acidification • Ship pollution • Wastewater • Fish kill • Algal bloom • Mercury in fish

Air pollution — Environmental impact of the coal industry • Smog • Tropospheric ozone • Indoor air quality • Volatile organic compound • Particulate matter

Reservoirs — Environmental impacts of reservoirs

Resource depletion — Exploitation of natural resources • Overdrafting

Consumerism — Consumer capitalism • Planned obsolescence • Over-consumption

Fishing — Blast fishing • Bottom trawling • Cyanide fishing • Ghost nets • Illegal, unreported and unregulated fishing • Overfishing • Shark finning • Whaling

Logging — Clearcutting • Deforestation • Illegal logging

Mining — Acid mine drainage • Hydraulic fracturing • Mountaintop removal mining • Slurry impoundments

Toxins — Chlorofluorocarbons • DDT • Endocrine disruptors • Dioxin • Toxic heavy metals • Environmental impact of the coal industry • Herbicides • Pesticides • Toxic waste • PCB • Bioaccumulation • Biomagnification

Waste — Electronic waste • Litter • Waste disposal incidents • Marine debris • Medical waste • Landfill • Leachate • Environmental impact of the coal industry • Incineration • Great Pacific Garbage Patch"

Some (including me) would argue about this list, and maybe there are many more issues such as use of herbicides, interference with natural hydrological systems etc. Roger Pielke Sr has much material on land-use issues if you really are interested.

But given the lack of evidence for anthropogenic CO2 being a real problem, it is strange how the resources of the planet are being focused on that issue, and many of the more serious issues mentioned above are being ignored.

Bugsy - I see Herbert S has given you quite a list but the one I mentioned in the original post, which is undoubted, is over-fishing..

There are genuine projections that most of the world's fishing grounds will be wiped out in 50 years time.. like the Canadians managed to wipe out the Grand Banks grounds a couple of decades back.. We need to adopt a different approach to allocating quotas..

Off the top of my head search on a guy called Boris Worm (okay, I know, but that's his name)..

The acid ocean stuff is just a distraction..

If they are wrong it will mean that we reduced our reliance on limited fossil fuels and found other sources of energy.

What if they were right and we did nothing? What would be worse?

What woulds be worse wobble. Giving control over our lives to the UN, & perhaps a world government.

It doesn't take much savvy to see the EU as a preview of the chaos ahead unless we kick the UN out of the world control they are trying for.

That is the greatest danger today, with far too many of our lefties & academics forming a fifth column within our society, trying to destroy us.

"What if they were right and we did nothing? What would be worse?"

Then we would have a very minor increase in warming over what's going to happen according to the predictions even with massive down shifting of the worlds economy.

"What could be worse?" Losing the opportunity we have right now to keep the flow of development and innovation going long enough for the benefits to flow through to those still trapped in real poverty. We may not solve all the worlds problems with engineering solutions but there have been massive changes over my lifetime which have been flowing onto many of the worlds poor. Changes that make lives better.

We can back off from that in search of minor changes to possible AGW outcomes and possibly doom all of the future to never having the wealth again to take the step's needed. What if this is our one shot at those changes?

R0bert