Earth Matters

World's largest orb-weaving spider discovered

Cat survives 19 hours in a freezer

Video: Tourists flock to swim with world's largest fish

Fish and people on the edge: Why the Zambezi River looks OK, but isn't

San Francisco starts mandatory composting this week

EnergyStar appliances don't all measure up

Will pollution help space aliens make contact?

Video: Bay area marks anniversary of 1989 quake

Media Mayhem: Nuking climate change

Alexandra Cousteau wants you to run for clean water awareness

MNN week in review 10/17/2009

Australian dust storms