• White House makes first major statement on ethanol this week. NRDC biofuels expert Nathanael Greene responds to the EPA's proposed rule to implement a new renewable fuel standard here.
• Saturday is National Train Day. Find out if there are events near you.
• Beetles are spreading a fungus in southeastern states that kills avocado trees, which could devastate Florida's avocado industry.
• Studies show that halving CO2 emissions by 2050 could stabilize global warming.
• Almost half of U.S. colleges go trayless, many see savings on food waste and water usage.
• GM promises a plug-in hybrid SUV by early 2011.
• NYPD introduces hybrids to its patrol fleet.
• Shell is scaling back its exploration program in the Beaufort Sea.
• The Obama administration wants to terminate the Yucca mountain nuclear waste storage site.
• New reports says e-waste will peak in 2015 and then decline.
• New Kansas governor agrees to construction of coal-fired power plant.
• The pika could be the first animal protected under the Endangered Species Act primarily because of global warming.
• Mercury levels in the Pacific Ocean have risen by 30 percent in the past 20 years and are expected to rise to 50 percent in the next few decades as power plant emissions increase.
• Capitol Power, which provides heat and hot water for congressional buildings, is switching from coal to natural gas to reduce greenhouse gas emissions.
• Interest groups and corporations have spent nearly $200 million on TV ads since President Obama's inauguration to try to influence energy policy reform.

Think I missed anything really great? Feel free to share it in the comments section. Want news updates every day? Check out my colleague Ben Jervey's blog on Greenlight.