Activists at Greenpeace intensified their environmental criticism of Amazon and Microsoft today by posting signage near the Seattle offices of both companies questioning the cleanliness of the companies' clouds.

Greenpeace International has ended a long-running campaign calling on Facebook to "unfriend coal" as a source of energy for its data centers, after Facebook agreed to promote clean and renewable energy, the two said Thursday.

While some consumer electronics manufacturers have cleaned up their act, making more energy-efficient gadgets with fewer toxic materials, others are continuing to make fine promises but no changes, according to Greenpeace. In response, the environmental pressure group is changing the way it scores companies in its Guide to Greener Electronics, placing more emphasis on their actions than their words, and measuring new aspects of their operations.

Apple has long prided itself on the environmental consciousness behind its products, and consistently aims to get greener. But according to Greenpeace's report measuring the amount and type of energy consumed by top tech companies' data centers, Apple is doing a poor job with its energy consumption.

In the first part of this news feature, ARN investigated why corporate citizenship is considered a smart investment rather than just philanthropy. In part two we look at the pros and cons of working with non-government organisations (NGOs).

Greenpeace has charged that Facebook, Apple, Microsoft, Google and others are contributing to global warming by using coal to power data centers for their cloud-based services. The charges are dramatic --- but are they on target?

A protest action by Greenpeace in Europe and India against Dell may continue for many days, and be extended to the U.S. in the next stage, a spokeswoman for the environment group said on Monday.

Acer launched two new laptops on Friday labeled by the environmental group, Greenpeace, as being virtually free of two toxic substances, polyvinyl chloride (PVC) and brominated flame retardants (BFR).