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Every year the topic of the dead zone in the Gulf of Mexico seems to pop up on TreeHugger—most recently in a report which links expanded corn production to the increasing size of the zone. New research shows that it’s not just in the Gulf that ocean dead zones are expanding but throughout the world.

A bizarre substance, like 'frozen smoke,' may clean up rivers, run cell phones and power spaceships.

Images depicting nature (and humans' impact on it) have long been valued as highly effective means to raise environmental consciousness and convey complex environmental concepts. For example, the Apollo 8 mission's famous photo of the Earth rising over the moon's horizon is often credited with helping nurture the rise of modern environmentalism.

Playhouse Disney and the Woodland Trust have teamed up to teach children about the importance of looking after the environment.