Salmon farming-the placement of large metal or mesh net cages in the ocean to grow fish-was pioneered in Norway in the 1960s. Since then, the industry has expanded to Scotland, Ireland, Canada, the US, and Chile, but is dominated by the same multinational corporations. Wherever it is practiced, net-cage salmon farming is controversial and raises serious environmental concerns.

Aboriginal people are key because they have a different sense of where we belong and how we interact with nature.

If we want to move towards a low-polluting, sustainable society, we need to get consumers to think about their purchases.

If we want to address global warming, along with the other environmental problems associated with our continued rush to burn our precious fossil fuels as quickly as possible, we must learn to use our resources more wisely, kick our addiction, and quickly start turning to sources of energy that have fewer negative impacts.

There is a gyre of discarded floating plastic the size of the continental USA in the ocean. In it, plastic trash outweighs plankton 40 to 1.

Humans are an infant species, a mere 150,000 years old. But, armed with a massive brain, we've not only survived, we've used our wits to adapt to and flourish in habitats as varied as deserts, Arctic tundra, tropical rainforests, wetlands and high mountain ranges.

More than any other time in history, the 1990s will be a turning point for human civilization.