Frances Beinecke writes to The Washington Post in support of restoring existing infrastructure rather than investing in new bridges, roads, and pipes; the letter to the editor was arranged by Erin Allweiss... In this week's Time Magazine cover story "Wasting Our Watts," Ralph Cavanagh and David Goldstein emphasize the untapped potential of energy efficiency... In The Washington Post, Henry Henderson calls on the U.S. and Canada to respect endangered species laws and migratory bird protections when evaluating tar sands developments... In The Chicago Tribune, John Walke protests the Bush Administration's attempt to block carbon dioxide regulations... Joel Reynolds tells The Los Angeles Times he is hopeful the Navy sonar settlement will lead to more effective whale protections... Rebecca Stanfield notes to The Chicago Tribune that reduced dependence on oil is the best protection against future oil-price spikes... In The Huffington Post and U.S. News & World Report, Stan Norris weighs in on the allegation that an American scientist helped the Soviet Union design its first hydrogen bomb in the 1950s.