Finally, California shows some sense. Lawmakers trashed an onerous, ill-timed, pushed by radical greens this week:

California lawmakers have rejected a bill seeking to ban plastic shopping bags after a contentious debate over whether the state was going too far in trying to regulate personal choice.

The Democratic bill, which failed late Tuesday, would have been the first statewide ban, although a few California cities already prohibit their use.

…The bill, AB1998, called for the ban to take effect in supermarkets and large retail stores in 2012. It would have applied to smaller stores in 2013.

Republicans and some Democrats opposed it, saying it would add an extra burden on consumers and businesses at a time when many already are struggling financially.

…The Senate took final action at the very end of the legislative session, reflecting how difficult it had been to muster support. The bill received just 14 votes in the Senate, seven short of the majority it needed.

The inconvenient truth is that the eco-propaganda about plastic bag perils is . Don’t take it from me. Take it from environmental scientists themselves:

“The Government is irresponsible to jump on a bandwagon that has no base in scientific evidence,” said Lord Taverne, the chairman of Sense about Science. “This is one of many examples where you get bad science leading to bad decisions which are counter-productive. Attacking plastic bags makes people feel good but it doesn’t achieve anything.”

Campaigners say that plastic bags pollute coastlines and waterways, killing or injuring birds and livestock on land and, in the oceans, destroying vast numbers of seabirds, seals, turtles and whales. However, the Times has established that there is no scientific evidence to show that the bags pose any direct threat to marine mammals.

They “don’t figure” in the majority of cases where animals die from marine debris, said David Laist, the author of a seminal 1997 study on the subject. Most deaths were caused when creatures became caught up in waste produce. “Plastic bags don’t figure in entanglement,” he said. “The main culprits are fishing gear, ropes, lines and strapping bands. Most mammals are too big to get caught up in a plastic bag.”

He added: “The impact of bags on whales, dolphins, porpoises and seals ranges from nil for most species to very minor for perhaps a few species.For birds, plastic bags are not a problem either.”

The central claim of campaigners is that the bags kill more than 100,000 marine mammals and one million seabirds every year. However, this figure is based on a misinterpretation of a 1987 Canadian study in Newfoundland, which found that, between 1981 and 1984, more than 100,000 marine mammals, including birds, were killed by discarded nets. The Canadian study did not mention plastic bags.

Fifteen years later in 2002, when the Australian government commissioned a report into the effects of plastic bags, its authors misquoted the Newfoundland study, mistakenly attributing the deaths to “plastic bags.”

The figure was latched on to by conservationists as proof that the bags were killers. For four years the “typo” remained uncorrected. It was only in 2006 that the authors altered the report, replacing “plastic bags” with “plastic debris”. But they admitted: “The actual numbers of animals killed annually by plastic bag litter is nearly impossible to determine.”

In a postscript to the correction they admitted that the original Canadian study had referred to fishing tackle, not plastic debris, as the threat to the marine environment.

Regardless, the erroneous claim has become the keystone of a widening campaign to demonise plastic bags.

David Santillo, a marine biologist at Greenpeace, told the Times that bad science was undermining the government’s case for banning the bags. “It’s very unlikely that many animals are killed by plastic bags,” he said. “The evidence shows just the opposite. We are not going to solve the problem of waste by focusing on plastic bags. “It doesn’t do the government’s case any favours if you’ve got statements being made that aren’t supported by the scientific literature that’s out there. With larger mammals it’s fishing gear that’s the big problem. On a global basis plastic bags aren’t an issue. It would be great if statements like these weren’t made.”