Earth Matters

Salazar scraps sale of oil-and-gas leases in Utah

How do El Niño and La Niña work?

What is wind power

What are green energy sources

Political Habitat: An ax falls in the forest

In the Green Room: New community preserves green space

How would you green the economy?

MNN's week in review 1/30/2009

Political Habitat: Emission, impossible?

Effects of air pollution

Truth in advertising?

Obama inauguration coverage