In the news this week:

• GM and Segway unveil a two-seat electric vehicle that runs on a lithium-ion battery and travels up to 35 miles per hour (Huffington Post, Fast Company, Wired's Autopia blog). NRDC's Luke Tonachel wrote about the P.U.M.A. here.
• A plan to green the Empire State Building could cut 38% of its energy consumption. NRDC President Frances Beinecke welcomes the makeover, writes that the Empire State Building will be a green beacon in New York City's skyline.
• Washington Post reporters call out George Will for lying.
• Arctic ice is thinner and more vulnerable than at any other time in the past three decades.
• The EPA reconsiders the Bush administration's position on a solvent used in dry cleaning.
• Compared to a liter of tap water, study finds that it takes as much as 2,000 times more energy to produce the same amount of bottled water.
• A "Cash for Clunkers" plan that gives vouchers to people for trading in old cars gains momentum after Obama supports it as part of the auto-industry recovery plan (Wall Street Journal, EcoGeek). Critics question the program's eco-friendliness.
• Gas consumption falls in California even with lower gas prices; economists credit poor economy.
• The Nation's two most endangered rivers are in California (the Sacramento and San Joaquin rivers).
• Hewlett-Packard is on track to recycle 2 billion pounds of electronic waste by 2010. Green Tech Pastures blogger wonders what percentage of the total technology sold that number represents.
• Legislative activity on renewable energy is picking up in a number of states.
• Salon writer advises readers to take a walk to restore humanity (and stop roadkill).
• An environmental health group raises concerns about the White House playground because the ground-up tired mulch contains a carcinogen.
• California's chinook salmon fishing season will be called off for second straight year after a low number of fish returned to spawn last year.
• Michigan Gov. Granholm signed a law channeling $220 million toward tax credits for the development and manufacturing of electric-vehicle batteries.
• Study finds that 1/3 of leatherback turtles tested have plastic in their digestive systems.
• The humpback whale in New York Harbor heads out to sea.
• Climate Progress calls for nominations of unsung heroes of sustainability. Share yours on Joe Romm's blog.
• The Obama administration discusses geoengineering the climate. One extreme option: shooting pollution particles into the upper atmosphere to reflect sun's rays.
• Lisa Jackson's Earth Day message calls on Americans to help build a clean energy economy.

Think I missed anything really great? Feel free to share it in the comments section.