 20% of the state's methane, which is 84 times more potent than carbon dioxide. Ackerman just received a $10 million grant to help communities turn more of their yard and food waste into compost so it is kept out of landfills. The world's rarest whale may have washed ashore on a beach in New Zealand. The 16-footer, believed to be a spade-toothed whale, first discovered in 1874. If it's confirmed, it would be the seventh ever found. Deborah Rodriguez, CBS News.