More in this Report

• Earth 3.0

  Global Warming: Beyond the Tipping Point

  The world's most outspoken climatologist argues that today's carbon dioxide levels are already dangerously too high. What can we do if he is right?

  Oct 6, 2008  | 46

• Earth 3.0

  LEED Compliance Not Required for Designing Green Buildings

  Constructing buildings to the LEED standard can conserve energy and materials--or be exploited for promotional gain

  Oct 14, 2008  | 5

• Earth 3.0

  Growing Vertical: Skyscraper Farming

  Cultivating crops in downtown skyscrapers might save bushels of energy and provide city dwellers with distinctively fresh food

  Sep 29, 2008  | 16

• Earth 3.0

  12 Ways to Lessen Your Footprint

  Twelve easy steps to take to make your life a little greener

  Oct 1, 2008  | 5

• Earth 3.0

  Biofuels or Food?: Can Crops Feed Our Cars--And the Hungry?

  To improve policies on crop use, invest in better science

  Oct 23, 2008  | 4

• Earth 3.0

  SciAm Test Drives Two Street-Legal Fuel-Cell Cars

  We put the hydrogen-powered Chevy Equinox and Honda Clarity to the test

  Oct 21, 2008  | 24

• News

  Scientists Get Wind of Why Coasts Cool as the Globe Warms

  Climatic conundrum may help the Los Angeles Basin and California's wine country dodge a bullet as the world warms

  Sep 23, 2008  | 1

• Earth 3.0

  The Future of Climate Change Policy: The U.S.'s Last Chance to Lead

  McCain or Obama can end shameful U.S. foot-dragging and rally the world against climate change

  Oct 13, 2008  | 17

• Earth 3.0

  "Voluntourism": See the World--And Help Conserve It

  "Voluntourism" ramps the ecological impulse up a notch, providing ways for vacationers to help save the world's sustainable resources

  Oct 15, 2008  

• Earth 3.0

  Buying Green: 7 Ecofriendly Products

  SciAm takes a look at new products, from environmentally friendly suede jackets to biodegradable toilet paper

  Oct 2, 2008  | 12