Environmental advocacy group Greenpeace is using the ongoing Macworld Expo in San Francisco to draw attention to Apple's use of toxic chemicals in its products. The organization is urging Apple to expand its recycling efforts globally.

The group has also established a website, Greenmyapple.org , to call attention to what they perceive as Apple's shortcomings.

At a press conference Monday, Greenpeace legislative director Rick Hind explained that Apple ranks at the bottom of 14 international mobile phone and computer companies, according to Greenpeace's own "Guide to Greener Electronics." The group has also protested outside the conference venue throughout the week.

The Guide ranks companies on a score of 1 to 10 based on the company's commitment to eliminate hazardous substances in their products and their position on recycling products once they become obsolete. Apple ranked 2.7 out of 10, lagging behind Toshiba, Samsung, LG, Panasonic, Sony, Lenovo, Acer, HP, Sony Ericsson, Motorola, Dell and Nokia. While Nokia and computer maker Dell ranked at the top of the list. "Nobody is getting an A in this class," Hind said. "We just don't think that Apple should be getting an F."

An Apple spokesperson said "We disagree with Greenpeace's rating and the criteria they chose. Apple has a strong environmental track record and has lead the industry in restricting and banning toxic substances such as mercury, cadmium and hexavalent chromium, as well as many (brominated flame retardants). We have also completely eliminated CRT [cathode ray tube] monitors, which contain lead, from our product line. Apple desktops, notebooks and displays each score best in class in the new EPA [Environment Protection Agency] ranking system, which uses international standards set by the IEEE [Institute of Electrical and Electronic Engineers]."

Apple has posted a webpage with information on its efforts to protect natural resources, and how that factors into its product design, manufacturing, energy efficiency and recycling efforts.

It and other computer makers are required by laws in the US and Europe to offer consumer recycling programs for their equipment, but these laws do not exist worldwide. Greenpeace believes that Apple should voluntarily implement a worldwide recycling program so that users anywhere can return iPods and Macs that have broken or become obsolete.

"The good news is that all of these companies agree that things should change," said Hind. "But 13 of the 14 top companies have a better score."

Greenpeace is also concerned over Apple's use of toxic compounds in the manufacture of its equipment, including polyvinyl chloride (PVC), a form of plastic commonly found in computer cables and housings. Also at issue is Apple's use of brominated flame retardants (BFRs).

"We recently tested major brands of computers to find BFRs and PVC," said Greenpeace toxics campaigner Martin Hojsik. "Tests found that the MacBook Pro scored highest for brominated flame retardant."

Greenpeace believes that toxic chemicals including BFRs, PVC, lead and other materials can't be recycled safely, especially when much of the work is being done by low-wage workers operating in unsafe condition in China and third-world countries, according to Greenpeace China toxics campaigner Yihua Yue. She illustrated the point using photographs of Chinese children standing before piles of electronic waste--e-waste--holding Apple-branded products like keyboards.

So far, Apple is the only company to merit a dedicated Web site from Greenpeace to encourage improving its electronic waste disposal and use of hazardous chemicals. When asked why, Hind explained that Greenpeace believes users of Macintosh computers and iPods may be more receptive to the group's message of environmental conservation.

So far, said Hind, it appears to be working – he said that the Greenmyapple.com Web site has attracted more visitors than any other Greenpeace Web site – more than half a million users since it was launched.

"If Apple does not become a leader in this area, the industry will not become as green as quickly. They're conspicuously absent," he said.