Voice of America: President Barack Obama stressed his administration's efforts to improve the environment during a visit to Yosemite National Park Saturday, but said much more needs to be done to safeguard the natural beauty of such preserves.
The president, first lady Michele Obama and their daughters, Sasha and Malia, drove through dense forest on steep mountain roads, enjoying breathtaking views of snow-capped peaks and lush valleys in the first park land set aside, in 1864, just for preservation and public...